No one's POV

It was a day like no other. Akeno was currently crawling up to Sora with bathrobe with a seductive voice.

Akeno: Sora, I want you.

Sora: A-Akeno...

Akeno: I can't believe you'd abandon me, just so you can go gallavanting all over Kyoto.

Akeno whines. Sora looks away, flustered as Akeno lays down on his chest. Sora clears his throat.

Sora: It's just a school trip.

Akeno: But that's two entire days I won't be able to get my hand on you. Really. And so... that's why, I'm gonna fill up on you now.

Akeno lean in his face. Sora widens his eyes feeling heat rush to his head as Akeno puckered her lips and leaned towards his own. Just as Sora was about to give in, another voice halted their moment.

Rias: Akeno! What the hell is going on in here?

Akeno and Sora turn to see Rias standing at the other end of the bedroom in her bathrobe and a towel wrapped around her hair. She was looking at the, and look very irritated.

Sora: Rias... Please... calm down...

Akeno: Oh, my. What's this? It looks as though our bicycle is in danger of becoming a tricycle.

Rias: You seem to be having a hard time controlling yourself.

Akeno: I'm not the only one having a hard time. Riiight?

Akeno then pins Sora to the bed and was about kiss him until something yanked his head away from her.

Koneko: Yo, stop hogging all the man-meat.

Koneko appeared as she snaps at Akeno with Sora's head in her lap.

Sora: What the-? Koneko? Where the hell did you come from?

Sora says, dumbfounded how he wasn't able to tell she was here. Koneko looks down at Sora and smiles.

Koneko: Sora, let's use my healing sage arts to help you relax better. And to get you back to full capacity.

Rias's eyebrow twitches in agitation at Koneko.

Rias: Wow. You too?

???: Oh my, I always love a good argument over a man.

Sora, Rias, Akeno, and Koneko all look back and saw Maria standing near his bed with a camera recording the whole thing.

Sora: Maria? What the hell are you doing here?!

Maria: Oh please~ I ask Basara if I could spend some time here. After all, its been awhile since I messed around with you.

Sora: Why you perverted Loli Succubus!! Don't you dare use your succubus powers on them!!

Maria: Hmm~ I'm thinking about it. After all, you and Mio have done it several times~

Maria says while whispering in his ears with a very seductive voice, which made Sora's shiver down a bit. And the sight of Akeno, Koneko, and Maria all smothering made Rias close her eyes in anger.

Rias: Geez! Why can't any of you learn to listen to your master's orders? And as for you miss succubus, explain yourself!

All the girls stop and look at Rias, saying in the same thing in unison...

Girls: Because Sora is ours.

Sora keeps his eyes at the ceiling, ignoring how close their chests were to his face. Rias rips her towel off her hair. She then runs forward jumping off the table and flying towards Sora.

Rias: NO! If anything, he belongs to MEEEEEEE!

Sora: Oh come on!

Sora exhales at the soaring red-head. The gold-haired teen is cut off as Rias then lands on him, her chest silencing his sentence.

(Timeskip)

The next day at school. In the classroom, Sora kept his head down, ignoring all of the gaze of his female classmate. His appearance has changed completely. He no longer had any black-haired, but his haired is now gold.

Some of them kept asking about his hair, but Sora only answers that Jeanne told him to try something new.

Jeanne: Well, I like this hair a lot better.

Sora: Thanks... But, I hate the stares...

Jeanne: You'll just have to ignore them. I'm more excited about the school trips...

Sora lifts his head up and sees Aika talking with Asia, Xenovia, Irina, and Jeanne about where to go while they're on the trip. Suddenly he felt a hand touch his shirts and saw Koneko standing next to his desk.

Sora: Koneko?

Koneko: Can I borrow you for a minute?

Sora just looked confused and Koneko brought him to the clubroom asking him if she could heal his life force after his Alter form took some of his life force while on the Dimensional Gap.

Sora: You want to heal me right now?

Koneko: Yes. I need to treat you as much as I can before you leave. The only way to recover the life force you lost after your Alter form attacked you is through regular Sage Art healing session. And I'm worried you'll lose progress with you being gone for two whole days.

Sora smiles at her.

Sora: You sure are amazing. The Sage Art Healing is the only Sage Art that I'm not able to master.

Koneko: Well your sage art is based on toad. While my sage art is based on nekomata. The nekomata sage art are more focus on our magic. While toad is on close combat.

Sora: Yeah, I guess your right.

Koneko: There are too many people at the house so it could be rather difficult for me to focus on healing you properly. Will have to do it here.

Koneko then changed her clothes and wear a robe. She released her kitten ears and tails and made Sora sit on the couch while she sat on his lap and started healing him.

Koneko: How does it feel? Is it helping?

Sora: Yeah, I feel a lot better.

Koneko looks down, blushing.

Koneko: There's another thing we can try. It's called bedroom arts.

Sora opens his eyes and stares at her. Understanding what she really meant, he ask her right away.

Sora: Wait, 'bedroom arts'? As in you and me.....uh, I don't think that I'd....

Koneko gently pushes him down on the sofa. With her pinning him down as she couldn't contain her scarlet cheeks.

Koneko: Don't think of it like that. Think of it like you're just training to get your life restoration back.

Sora: That just makes it sound like I'm using you. Which doesn't really make it any better.

The pair then hear someone clear their throat and look to see Rias standing in the doorway.

Rias: While I understand the sage arts are a necessary method to heal Sora, I'll have to ask you to reframe from doing the deed on school grounds. Also, I wanted to tell you that my family is having a gathering. We'll be stopping by the Gremory House to say hello, since you'll be leaving for Kyoto shortly.

(Timeskip)

After school, the whole ORC took the train to the underworld the visit the Gremory household. They all were quickly welcome and sited in the dining room and both Irina and Jeanne were looking at the place in awe.

Irina: I never thought an Angel would visit the mansion of an Upper-Class Devil.

Jeanne: Same goes for me. To think a Hero like me would be welcomed here. We are beyond honored.

Venelana: Well, the pleasure is all ours, dear.

Zeoticus: So Rosseweisse, you're interested in our educational system?

Rossweisse nods.

Rossweisse: Yes. I was hoping maybe I could open a Norse Magic School in the Gremory domain and thought it would be interesting to try and raise some Valkyrie devils.

Zeoticus chuckles.

Zeoticus: As the head of the Gremory Household, I think that would be a fascinating endeavor.

Venelana: Speaking of school, doesn't your class have an upcoming trip soon, Sora?

Sora: Yeah, we are all going to Kyoto.

Venelana: Of course, Rias went on that same trip last year. She brought us back some pickled vegetables that were simply divine.

Sora: If you would like, I would be honored to brought you all some souvenirs after I return.

Venelana: I was just making conversations, but that's a sweet offer. I'm looking forwards to your souvenirs. Though I hear they're melon balls are amazing.

Sora: 😳 Oh um...

Rias: Ahem!

Sora: Sorry...

Zeoticus: Oh yes. Did I mention Sirzechs is in the residential area.

Rias: My brother's here?

(Timeskip)

After dinner, Sora, Rias, and Milicas head to the park where they saw Sirzechs talking with Sairaorg.

Rias: Hey, Zechs.

Sirzechs: How'd you know?

Sirzechs sees them and smirk and Milicas ran to his father's side, as Sirzechs ruffles his hair.

Rias: Father told us. How are you? I hope well. So good to see you.

Sirzechs: There was no need to go out of your way to see me, but thanks.

Sairaorg turns to Sora.

Sairaorg: This is a nice surprise. If it isn't the Ruin Princess and the Black Dragon of Ruin.

Rias: Sairaorg? I wish you would've told me you were stopping for a visit.

Sirzechs: Good news is he was kind enough to bring some delicious fruit from the Bael domain. Also, we used this opportunity to discuss the details of the Rating Game you and he will be participating in. Outside the usual rule field requirements, Sairaorg has asked to remove any complicated rules of battle within the Rating Game.

Sora and Rias look at each other before back at Sairaorg.

Rias: So, basically what you're saying is that you're going to allow all our various powers in combat?

Sairaorg nods.

Sairaorg: Yeah, that's exactly what I'm wanting. If I can't take your people on at full strength, than I have no business claiming to be the heir of a great Devil family.

Sirzechs: Indeed. Sairaorg, weren't you hoping to exchange a few blows with Sora?

Sairaorg: Yes.

Sirzechs: Perfect. Then why don't we set up a quick bout right now?

Sora cocks a brow.

Sora: As in right this second?

Sirzechs looks to his younger sister.

Sirzechs: What are your thoughts, Rias?

Rias shrugs, grinning.

Rias: Fine by me. I mean, if the Great Devil King wishes it so, then I guess I can't really refuse. Sora, think you can handle it?

Sora: Of course. If you don't mind.

Sirzechs: Most excellent. I'm looking forward to seeing what kind of power the Black Dragon Emperor. Especially Artoria's son. Aren't you, Sairaorg?

(Timeskip)

Later, the ORC and Sirzechs stand at the ends of an arena as Sora and Sairaorg were about to face off. Rias, Akeno, Issei, Kiba, and Jeanne were at the the ground, while the rest were at the balcony.

Sairaorg: I've been looking forward to this day for a while now.

Sairaorg then ripped of his formal clothes, showing his muscular build.

Sirzechs: Now, begin the match.

Sora: Let's go, Draco!

Draco: Leave it to me!

Sairaorg: This should be interesting.

Draco: Phantom Dragon: Sage Art Balance Breaker!

Blue aura started surrounding Sora as he transform into a new type of black dragon armor. It was the combination of his Black Dragon, Sage Art, and holy power.

Sora: Let's do this!

As soon as he transformed into his Balance Breaker, Sora speed blitzed and he immediately appeared in front of Sairaorg and punch him in the face sending him skidding back a few meters.

Sairaorg: Not bad, Sora. That was a decent attack.

Sora:...

Sairaorg: Any high ranking devil might go down with that. But, I'm...

As soon as he said that, it was Sairaorg's turn as he speed blitzed behind Sora shocking him.

Sora: Wha-?!

Sairaorg: STRONGER!!

Sairaorg then throw a punch at Sora, who barely managed to react on time to guard, and he was sent flying.

Sora: Holy... What a heavy strike...

Sairaorg: Oh, your still standing. No matter, I'm just getting warm up.

Sora: Getting warm up. You nearly broke my hand with that attack.

Sairaorg: Let's go!

Sora: Your on!

Sairaorg and Sora rushed towards one another with Sairaorg going for a kick, only for Sora to clash with him with his own kick, creating an extremely powerful shockwaves.

As soon as the they broke the clash, both Sora and Sairaorg went for a barrage of punches with one another. Each shockwaves was immense. It causes the entire arena to tremble. Cracks could be seen appearing everywhere.

Neither of them was giving an inch. From the rest of the people watching. They look like evenly match. But they are not quite equal. They are equal in speed, and in the number of moves each of them possess. But Sairaorgs punches are more stronger than Sora's.

Sora(mind): Blow for blow, Sairaorgs punches are harder than mine. At this rate...

If the fights continues on like this, Sora will definitely lose. The two of them separated from each other jumped back.

Sora(mind): What a beast. Is he really in the same generation as Rias?

Draco: Yes. Even I'm surprise. A power type that raised his physical strength to its utmost destructive limit. It's even more powerful than anyone we've ever fought.

Sora(mind): He should have inherited the power of destruction. But instead, he was born in a devil household without it. The only thing he had was his own body. He became so strong that he was chosen as the next heir.

Sairaorg: Well, is that all your going to offer?

Sora: Tch!

Draco: Accel: Third Gear!

Sora: Multi Shadow Clone!

Suddenly, over dozens of clones appeared. Sairaorg and everyone else look impressed by the sheer number of clones. Each and ever one of them rushed towards Sairaorg and attacked him. To which Sairaorg fought back and killing each and every clones one by one.

The barrage of attacks didn't stop for even a second. Each and every clones all rushes in just to land a blow, but Sairaorg didn't give any slight of opening as he destroyed every single clones one by one.

Sora: Tch!

Three clones then rushes in and went for a punch, only for Sairaorg to suddenly disappear from sight as Sora and the others all looked surprised.

Clone 1: He disappeared?!

Clone 2: Where did he go?!

Sora: Above us!

All clones then look up as they all saw Sairaorg above them as he was about to punch the ground. And the real Sora jumped out of the way as Sairaorg punches the ground with so much that it destroyed the entire arena and completely wiping away all of the clones.

Sora: Wha—?!

Sairaorg: Hmph! Fighting you has been a lot of fun. But when you fight someone as similar to yourself. That's how you grow as a warrior. Now come on! Show me what your really capable off!

Sora: Your on!

Both Sora and Sairaorg smile at one another as they continue fighting. Sora generated a massive rasengan and come towards Sairaorg, but he punches the air with some much force that the rasengan was obliterated.

Sairaorg: Is that all you've got?

Sora: There's no way I'm giving up. This fight is just gonna get more intense.

Sairaorg: Then don't keep me waiting.

Sora and Sairaorg: HAAAAAAAAAAAAAAAAAA!!!

Both of them rushes in and the two of them brought their fist forwards. As both punches connected with one another, it creates a massive shockwaves that blows everyone away.

Sora:...

Sairaorg:...

Both Sora and Sairaorg stare at one another. Their eyes seems to have drawn each other. A single second stretch on forever. Sora's blue eyes met Sairaorg's gaze.

Sairaorgs: How about we end the fight right here...?

Sora: Are you sure? I'm just getting warm up...

Sairaorg: Hahaha! Well great minds think alike. Because I'm not either. But, if we were to continue, we keep fighting until one of us fell. It seems like a waste. Especially when it feels like you are on the verge of some kind of evolution.

Sora:...

Sairaorg: I'm willing to wait until then. Until we can fight at our best. On that day, grab me another fight with the Black Dragon Emperor. What do you think, Sora? Are you okay at putting this battle on hold until then?

Sora smile at him and deactivated his Balance Breaker and gave Sairaorg a fist bump.

Sora: Yeah.

As soon as they broke their fist bump, Sairaorg look at the ORC.

Sairaorg: Rias! And all those who are apart of Rias's House! The next time we meet, will be on the stage that leads us to our dreams! Come! And know that I'll take you down with everything I have! I look forward to the day!

Sairaorg waves goodbye and exits the arena and Sirzechs came to Sora.

Sirzechs: Well what did you think, about fighting Sairaorg?

Sora: He's amazing. His heavy blow almost felt like mine.

Sirzechs: Indeed they were. Sairaorg has trained intensely to fill the gap at where he was lacking. That is how he became so strong. Thus possessing something other devils do not have.

Sora(mind): He pushes himself to the limit.

Sora then thought of something. He was never able to draw out his sword while using the Balance Breaker. And in order for him to get stronger, he need to fill in the gap and find a way to break his limit.

Sirzechs: I have to admit though, I was highly impressed. Usually when people battle him, people give up close to when the bout is far from over. Their demonic power fails, and they're overwhelmed by his sheer strength. And any demon who believes that demonic power equals status, quickly lose heart. Especially anyone who comes from a high rank family.

Sora: You know, I never properly won in a rating game before. But next time, it will be different.

(Timeskip)

After the fight, the ORC returns to the Gremory Mansion. Rias sees her mother on the couch and calls to her.

Rias: Mother.

Venelana sees them and stands.

Venelana: Oh, are you heading back already?

Rias nods.

Rias: Yes. Sora and the others need to prepare for their class trip.

Venelana: I understand.

Sora watches them from a few feet away, smiling at his girl. He didn't realized that Milicas steps up to him and pulls him out of his daze.

Milicas: Hey, Sora? Can I ask you something?

Sora: Go ahead?

Milicas: Well, when you graduates, you'll be becoming twenty years old, and Rias will become twenty one. Sooo....

Milicas trails off, pushing his fingers together. That made Sora narrow his eyes and crosses his arms.

Sora: What are you getting at...?

Milicas: Are you gonna marry Rias?

That left Sora stunned. He was unsure how to respond.

Sora: Marriage. I-I never really thought about it. It is a Big step forward. But... I think, when the times is right, I will...

Sora said smiling and Milicas nods as they both look at Rias smiling and talking with her mother.

(Timeskip)

After returning back, Sora, Issei, Asia, Xenovia, Irina, and Jeanne all started to pack their things. Checking for anything that they might forget for the trips. After they were done, they went to bed. But, Sora was tossing in bed, unable to sleep.

Sora: Man, this is ridiculous. How can I be excited and depressed at the same time to make me not fall asleep? Stupid trip has got me all discombobulated.

Rias: Oh? Is the thought of getting away from me really that exciting?

Sora rolls his eyes turns towards her blue eyes.

Sora: You know that that wasn't what I meant. I'm just...turned around in my head is all.

Rias: I know silly, I'm only teasing you, Sora.

Rias then puts her hands on his face.

Rias: Since this is going to be our last night together for a couple days, maybe I should give you a going-away-gift.

Sora flutters.

Sora: You're not talking about what I think you are, are you?

Rias: I heard from the succubus of a little sister of yours, that you and Mio did it almost all the time.

Sora: That little sister of mine...

Rias uses her magic to lock the door and gives Sora a seductive grin.

Rias: Well, then?

Sora chuckles and look at her.

Sora: Alright, Rias Gremory. I'll give it to you. What I did with Mio as well.

Each of them took out their clothes and they both then had a very MEMORABLE night that would stay in their memories for a long time.

(Timeskip)

The next morning, Rias was saying her goodbyes to the rest of the ORC that was about to leave. Rias then hands them ID cards.

Rias: And here's your identifications.

Kiba: Ah, the rumored ID.

Kiba remembers having heard about.

Rias: Yes. Devils are required to have this free pass on them while in Kyoto. It's also handy for sight-seeing.

Issei: So basically this pass can let us see any of the temples?

Issei inquires and Rias nods.

Rias: Yep, that's right. Basically, its a pass that even allow a devil to enter the temples in Kyoto. Go on now, have a good time. And Asia, before I forget, this is for you.

Rias then handed Asia some sort card.

Rias: Have fun and enjoy one of my favorite cities.

Everyone: We will.

Asia: See you when we get back.

Jeanne: Take care, Rias.

Xenovia and Irina: See you later!

Kiba: We'll bring you back a souvenir.

Rias: That's very kind of you.

Issei salutes Rias with two fingers.

Issei: Ciao, Rias!

Sora picks up his duffle bag.

Sora: Guess I'd better hit it too.

Sora was about to follow but felt a hand grab his wrist.

Sora: Rias?

Rias looks down.

Rias: Oh, Sora. It turns out, I'm no better than Akeno. The truth is, I'm going to miss you terribly.

Sora sighs and drops his bag, hugging the sad red-head.

Sora: Hey, it's only two days. You'll be fine. Besides, you'll have Akeno, Koneko, and Gasper to keep you company.

Rias: *Sigh* Yes, that's true. Just...be safe.

Sora: Of course. You know I will.

Sora was about to hope on the train before he walks back to Rias and brings her down for a long, passionate kiss before he pulls her back to her feet and inhales deeply.

Sora: That help?

Rias touched her lips, blushing.

Rias: Much. Thank you.

Sora: I'll always be with you. Even if it means fighting the world. Nothing can keep us apart. That's how much I love you.

Rias feels tears hit her eyes.

Rias: I love you too, you sentimental dork.

Sora: I'm not the one crying. Especially after what we did last night.

Sora snaps back, playfully, and Rias started blushing even harder as she hold her bottom part. Sora winks at her as he rushes on the train and waves one last time before the train whistle goes off the and leaves the station.

Rias: Oh you~

(Elsewhere)

In an unknown location, two people could be seen standing with one another.

??? 2: Shalba has now fallen. An Vali will hardly make it to the top. What are your both thought? Should the Hero Faction made a move soon.

One of them spoke in the midst of silent.

???1: No. you do realized we will have to make a move at some point. The all powerful sacred gear.

??? 2: The true Longinus. I already have multiples of them. Its time for me to meet that Pendragon son of hers. That mongrel!

The second figure stood and suddenly, multiple golden portal like gates appeared behind him. Thousands of swords appeared from them as the person had a sadistic smiles.

??? 2: Just you wait Artoria! How dare you reject me and be with someone else! If you're gonna keep hiding, torturing your son will make you come to me instead.

A/N: Alright. Here is season 4 of Phantom King (Hero). I know a lot of you been waiting for this. So I hope this will turned out great. And as always, I hope you enjoyed this story, thank you for reading.