Ok so before we start I decided to change up weapons a bit.

Lightning Spear --> Lightning Sword

Fire Sword --> Fire Gauntlets

I think this is a bit more suitable.

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-3D POV-

Currently Y/N was sitting in the living room with Asia and Marika.

Y/N: So you were a queen and a vessel to an outer God long time ago huh. That's honestly surprising, anything else we should expect?

Marika: Some of my children shall come here for a......family reunion sooner or later. (My AU)

Y/N: I see. And I suppose it won't be good?

Marika: Not entirely. The last family reunion was just..............awkward.

~~mini flashback~~

Rykard: FAMILEEEEEE!

Radahn: HOLY SHIT! You're a snake Rykard!

Rykard. FAMILEEEEEE TOGETHAAAAAA!

Radahn: Yeah family gatherings will be very awkward.

~~mini flashback end~~

Y/N: *sigh* Well as long as they don't cause trouble then I guess it's okay. And thank goodness this house has magic in it. Otherwise I don't think it would be able to house all of us.

Marika: Indeed. If that is all you need to know then I shall depart.

With that she dissappeared back into Asia's sacred gear.

Asia: So what now?

Y/N: I'm gonna go prepare for a trip.

Asia: Where are you heading?

Y/N: Olympus.

Asia: H-HUH!? B-but isn't that dangerous?!

Y/N: And that's exactly why I'm going alone.

Asia: A-are you sure? Maybe take Miss Atago and Miss Takao with you just in case.

Y/N: No. If the Greeks see Yokai trespassing on their territory it can turn out really and really bad. Plus they most likely don't know about me so I'll just introduce myself as a human who came to retrieve the weapon.

Asia: I see.

Y/N: But before that I need to prepare a suit.

Asia: What for?

Y/N: I'm going to court tomorrow.

Asia: Wha?

~small tiny timeskip brought to you by this mf who achieved true peace~

(Manga: Dungeon Odyssey)

The day of the court has come. Both sides arrived in time and Hyoudous tried their best to win, although it was futile. (And cos I have no fucking idea how to write this I'll skip it. Sorry) By the end of it Y/N won and he now had full custody of Issei. The Hyoudous meanwhile were forbidden to approach both of them unless it's something school/business related. As Y/N and Issei were heading to the car Issei asked a question.

Issei: So what do we do now?

Y/N: *smirks* You will begin training for real now. I already informed Cronus and he's waiting near your former house to help you get your things and move to my place. After that you're gonna start training. And this time, 3 times harder.

Issei: Ah shit.

Tu'Shan: 'HAHAHA! I LIKE THIS GUY! A TRUE CUSTODES INDEED!'

Issei: *groans* 'Not you too!'

After dropping off Issei Y/N headed back home where he went to his room and quickly changed into his gear which consisted of some light military armor with 2 deagles hidden in the boots and considering that Fauna said that he can use magic as bullets he didn't bring any mags. Well just 4 just in case. He summoned the Ice Axes on his hips and his arm changed into the sacred gear.

Y/N: I'm ready. So where are you teleporting us?

Fauna: Not too far from New York. Olympus is currently floating above it hidden from human eyes.

Y/N: Damn.

In a flash Y/N dissappeared from his room and appeared in a forest located not too far from New York.

Y/N: Ugh. When will I get used to teleportation. So where to now?

Fauna: Now we need to find a camp for demigods. In there lives a good friend of mine who can help us and tell us how we can get to Olympus.

Y/N: And where is the camp exactly?

Fauna: I don't remember.

Y/N:......................*sigh* Can't we just ask Hestia?

Fauna: I tried to contact her but failed.

Y/N: Damn it.

Fauna: But you can try locating it via magic. Considering it's a big camp full of demigods you can easily find it. 'Hopefully'

Y/N: Okay let's try it.

Concentrating and remembering what Fauna taught him Y/N started to release small ripples of mana around him scanning the surroundings. After a minute he felt them hit some sort of huge dome made out of magic.

Y/N: Found it. *turns left* That direction. *starts running* 'Although I need to hurry. I felt a lot of malicious auras from there'

With that through Y/N continued running and sometimes parkouring over fallen trees. After 2 minutes of running he saw a lot of kids trying to fight against over 100 minotaurs.

Y/N: 'Meng you take half! I'll take the other half!'

Meng: 'Understood master'

Y/N grabbed the axes and threw one at the head of the minotaur who was about to kill a little girl. This caused the minotaurs and the children to look in his direction in surprise. The second axe meanwhile was engulfed in ice and became 4 times bigger. When Y/N was withing reach he swung the axe successfuly killing 18 minotaurs. As 2 of the minotaurs rushed at him, Y/N jumped up and over the horde with a backflip while pulling out one of the deagles and shooting at them killing the 2. He then landed on one of them and shot it in the head and jumped to another. This way he killed 5 of them and now landed in front of the children. Then he saw in the back a huge lightning bolt strike the ground and ice spikes come out of the ground. Then a female crazy laugh followed.

Y/N: 'Well Meng is having fun'

Vulcan: 'Let me have some fun with these guys!'

Y/N: 'How?'

Vulcan: 'Focus your aura next to you and imagine some fire'

He did as told and the next thing he knew a silhouette of Vulcan holding her hammer appeared next to him. (Think of Vergil's SDT copy)

Vulcan: Come here!

Without lasting a second she jumped into the cround of Minotaurs and started killing them with one hit of her hammer and with her bare hands. While watching Vulcan having fun, as all minotaurs switched their attention to her, he felt someone tap his leg. Upon looking down he saw a girl no older than 6 dragging his other axe.

Girl: H-here sir.

Y/N: *smiles* Thank you.

He bend down and took the axe while patting her on the head. As he stood straight the girl ran back to others and he noticed that most of the girls had bows and knives as their weapons. Half of them, who were older, were glaring at him while the younger half looked at him in awe.

Fauna: 'They're hunters of Artemis. Let's hope I can talk some sense into her before she kills you'

Y/N: 'Damn'

He then heard someone land next to him and when he turned his head he saw Meng being way bigger than before. And now the roles were reversed as he was the one who was only up to her chest.

Y/N: Well damn. This is unexpected.

Meng: Aw~ now look at you, so small. Now I can do this~

She stood behind him and put her breasts on top of his head.

Y/N: Please don't do that. There's kids here.

Meng: *pouts* You're no fun. *returns to her normal form*

Vulcan: Now that was fun!

Both of them looked at Vulcan who was sitting on a big pile of disappearing minotaur bodies as she started to dissappear as well.

Vulcan: Aw man. Guess I'm out of time. See you later guys.

With that she fully dissappeared. Suddenly a bright flash of golden light appeared in front of Y/N and when it dissappeared a man stood in its place.

Apollo: Guys are you okay! I got a message from my son and came as quick as I could! *notices Y/N and Meng* Huh? Who are you guys?

~one explanation later~

Apollo: Oh I see. Well if that's the case I can take you straight to Olympus and to Auntie Hestia.

Fauna: *in chibi form on Y/N's shoulder* Thank you Apollo. You're a life saver.

Apollo: It's nothing really Auntie Fauna. But I have to make sure that the kids get to the camp safely first.

Y/N: Meng could you escort them back?

Meng: No problem master.

Apollo: Master?

Y/N: She's my familiar.

Apollo nodded understanding and put his hand on Y/N's free shoulder. They dissappeared in a flash and appeared in front of huge golden doors.

Y/N: Okay that felt way better than teleportation.

Apollo: *chuckle* Come on. This is the meeting room and I'm sure it's empty as of now so I'll guide you straight to Auntie Hestia. She's currently tending to the hearth.

Apollo pushed open the doors and both entered. Apollo guided Y/N through the huge room while talking. Both not noticing the gazes of the rest of the Olympians staring at them.

Apollo: And that is how I'm planning to spend the next prank week.

Y/N: Damn that's brutal. I can't even remember when I had fun like that.

Apollo: Aw damn man. You know what I'll visit you sometime to bring you with me to pull pranks. You up for it?

Y/N: Hell yeah!

Hera: AHEM!

Both of them froze in place and slowly turned around and finally saw the Olympians staring, some glaring and some looking with lust(more at Y/N) at them.

Y/N: *whisper* You told me the room was empty.

Apollo: *whisper* Last time I was here it was empty.

Y/N: *whisper* And when was that?

Apollo: *whisper* Two days ago. *realization*

Y/N: *whisper/yell* You son of a-

Zeus: ENOUGH! APOLLO WHAT IS THIS HUMAN DOING HERE!

Apollo: Hehe. W-well you see-

Fauna: He's here because of me you big oaf.

Zeus: YOU!

Artemis: 'Aunt Fauna!?!?'

Fauna: Me. Now be a dear and shut up before my host beats your sorry ass.

Zeus: HOW DARE YOU! A PATHETIC HUMAN DOESN'T STAND A CHANCE AGAINST ME!

An angry Zeus stood up from his throne and threw a bolt of lightning at Y/N.

Hestia: Y/N!

Y/N jumped to the side but the bolt was too fast and as it was about to hit him everything slowed down and someone grabbed him by the hand and pulled him to the side. As Y/N looked at the source he saw another woman standing next to him. She was most definitely taller than him but a bit shorter than Vulcan.

Y/N: You're one of Vulcan's sisters.

Jaghatai: Yup. Names Jaghatai Khan. Primarch of the White Scars. Nice to finally talk to you.

Y/N: Nice to meet you. And seeing that you're not a manifestation of aura I'm guessing you manifested fully into the real world?

Jaghatai: Seems like it.

Y/N: Okay so can you explain what's going on around us?

He looked around and saw that everything was moving very very very slowly.

Jaghatai: Speed is my speciality. I'm the fastest of the primarchs and no one can match my full speed. And currently we're moving at such speed that everything is slow around us. Although I don't know how you're doing it.

Y/N: Maybe has something to do about you being in my head before?

Jaghatai: Most likely. So what do we do now?

Y/N: Get the sword and mess with the angry buffoon a bit?

Jaghatai: *smirks* Sure.

Both started running. Y/N in the direction of Hestia's voice where he heard it. While Jaghatai ran and grabbed the thunderbolt somehow and threw it back at Zeus. As Y/N reached Hestia he saw her carrying a sheathed sword so he carefully took it and ran back to Jaghatai.

Jaghatai: Got the sword?

Y/N: Yup. *unsheathes the sword*

Jaghatai: *whistles* Nice one.

Y/N: Agreed. So how do we return to normal?

Jaghatai: Just imagine stopping and everything coming back to normal.

He did so and they observed as the bolt struck Zeus which made him collapse back on his throne.

Jaghatai: Huh, I guess I threw it too hard.

This action made most Olympians look at them in shock and some fear.

Y/N: Now. Shall we talk or fight!?

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And that's done. A bit longer than I expected but it'll do. Tell me what you think and I hope you enjoyed.