a/n: Requested by AmericanWarbird, Ok a crossover haven't done one in a while

*3rd Person's POV*

???: Bring them here

???2: Roger

???: Go!!

???3: Right!!

Meanwhile in a street where there are so many undead walking towards a group of teenagers... Er one adult

???: Takashi!

Takashi: I know Rei!!

The boy shot the nearest zombie in the head with his rifle, however they are clearly outnumber 1 to 100

Alice: Miss Shizuka, I'm scared

Shizuka: Don't be Alice

Rei: Ms. Shizuka look out!!!

The blonde looked behind her a zombie going near her, but it was shot in the head by an unknown bullet

???: Are you alright?

The looked at the source of the voice a (h/c) haired male piloting some kind of machine along with a few more machines

???2: Check the perimeter see if there is anymore survivors

???3: Alright

A girl with blue eyes with dark brown hair shoots the remaining zombies with her blaster, then went to them

Houki: Hey, I'm Shononono Houki we came here to help you get to safety

[y/n]: I'm- Alice is that you?

Alice: Huh? [y/n]-nii?

[y/n]: *Smile* Yes it's me

He deactivated his machine then Alice run up to him enveloping him in a tight hug, he hugged back

Alice: I missed you!!!

Rei: You know him Alice?

Alice: Yeah!!

[y/n]: She's my cousin, when I heard that there is an outbreak I wish for their safety, we have several rescue mission before this. Those mission we went through I was hoping my family is safe but no such luck, i was about to lose hope but when I saw Alice here I realized that there is still hope

???: [y/n]?

He saw a pink haired female with glasses with twin tailed hair

[y/n]: Yes?

Takashi: You know him Saya

[y/n]: I'm sorry I can't seem to recall meeting you

Saya: Of course you don't recall me you are a huge idiot anyway

[y/n]: Wait... Only one person called me a huge idiot... Sa-chan? Is that you?

Saya: Finally!! The huge idiot remembered me!! Huh!?

[y/n]: SA-CHAN!!!

He jumps on her enveloping her in a big hug shocking the others except Alice

Alice: So you're the Sa-chan [y/n]-nii has been talking about

Saya: So you talked about me?

Alice: Yes, specifically you're the only one he talked about... After all he has a cr-hmph!!

[y/n]: Okay that's enough Alice, haha... *whisper* Please don't say out loud

Houki: [y/n] we need to go, my scanner detects more of those coming this way

[y/n]: Alright Houki...

He activated his machine named an IS, he called it Kurohono a combination of black and red themed IS

*Saya's POV*

A chopper came to us, [y/n] make sure that we are safe along with his friends to tell you the truth I have always known that he has a crush on him.... Alice told me, well to be honest I also have a crush on him, I was saddened when he went away. In highschool I still can't forget this feeling, when I attempted it but whenever I look at the photos of me and him they returned.

Now for the first time in years he returned now the feeling is far stronger than before, I noticed how much he's changed through these years, he's become much more attractive

When we got to the destination place we look and saw a building that is like a research center we saw a woman who looks very professional when we landed she came to us

???: Good to see all of you are safe, I'm Orimura Chifuyu welcome to the IS academy

Rei: Can you explain to us more about these machines you called IS

She explained to us thoroughly, when she's finished she debrief [y/n] and his friends. I went to him

[y/n]: Hey Sa-chan... What's wrong?

Saya: Nothing... Just wanted to do something for a long time....

I punch him in the gut causing him to fall down holding his stomach in pain.

[y/n]: *Groan* W-what was that for Sa-chan!?

I gave him a smack on the head causing a big bump on his head

Saya: That's for not contacting me

I gave him another smack

[y/n]: AND WHAT WAS THAT FOR!?

Saya: ... Force of habit

He was about to say something then I gave him a tight embrace, which he stopped moving but eventually return the gesture, I miss this his warmth

Saya: I really missed you

[y/n]: Me too Sa-chan...

*Houki's POV*

So that's the Sa-chan [y/n] has been talking about since he came to the IS academy, I have to admit I am jealous about their relationship... Even though [y/n], Ichika and I known each other. Ichika is my childhood friend, but I was forced to move away.

I was saddened by that when we got into a new town it was hard to adjust to a new lifestyle but I eventually did, that's when I met [y/n], he was new in town I met him at school he sat next to me whenever I look at him he looks like he is lost. He is not very talkative at first, eventually we broke that shell after we did he's very nice and caring... He's a definition of a true friend.

During that time I have developed a small crush on him, overtime that crush turned into infatuation then into love. But when we graduate middle school I was beginning to become sad again I am going to be separated from him since I can't pilot an IS. However when I heard him and Ichika are going to the IS academy since they both made an IS respond to them, I was happy because of Ichika. I am, however, ecstatic when [y/n] is going to transfer.

[y/n]: Hey Houki

I snapped out of my thought when I saw [y/n] looking at me with a concerned look plastered on his face

[y/n]: Are you alright? You kinda zoned out there

Houki: *Blush* S-sorry

[y/n]: It's fine but, are you sure you're alright?

Houki: Yeah...

I rest my head on his shoulder, he looks at me confused

[y/n]: Houki?

Houki: Just let me have this moment [y/n]...

[y/n]: That's fine

I smiled as I savor this moment I slowly close my eyes then I saw me and him, I was sitting on his lap while he's hugging me from the back. To me that would be the perfect life

Timeskip 2nd Person's POV

Saya and Houki tried their best to gain your attention but once they try to confess their feelings something or someone interrupt them.

Saya/Houki: 'This is getting annoying, I know!!!'

They both speed off and saw you at the library reading both of them look at each other most of the students almost saw their eyes producing lightning and clashing with each other, when they calmed down disappearthey went outside

Saya: Alright Houki, what are you going to ask [y/n]?

Houki: I could ask the same to you Saya...

Saya: Alright then... I'm going to make him mine

Houki: Oh, I'm not gonna let you have him...

Saya: Same to you, he's mine... I am his childhood sweetheart

Houki: And we've been together longer, so it's fair for me to have him all to myself

Saya: I beg to differ Houki

A random student pass them she has dark brown hair and brown eyes with the letter "X" on her right shoulder

???: Why don't you share him?

She disappear as soon as she said that

Houki: Who was that girl?

Saya: No clue... But she does have a point

Houki: What do you mean?

Saya: Look you like him, I like that idiot too... If we fight any further he'll be mad, he hates it when friends fight each other

Houki: You're right... That part of him is the reason why I like him

Saya: It's the same reason for me... How about we share him?

Houki: If you're fine with it, then alright

You receive a text from Houki to meet her in your shared room after class you agreed. But when you entered your room you are met with both Houki and Saya

[y/n]: Sa-chan?

Saya: [y/n], me and Houki have something important to tell you

[y/n]: Okay, what is it?

Houki: [y/n], we wanted to tell you this for a long time but whenever we are about to say it there is an interruption... We are trying to say that time is that we love you

[y/n]: ... I love you too... I cannot pick so I kept it knowing that if I pick one the other would get hurt

Saya approach you and pressed her lips against you, after her Houki is next, when she pulled away she sat down on your bed with Saya

Houki: Now let's seal the deal

They pulled you to your bed and started to undress you also undressing themselves you didn't resist when you three are fully naked Houki pushed you down and proceeded to make-out with you while caressing your chest you kissed her back while massaging her breast a soft moan came out of her mouth but your pressed lips are muffling it

Saya then started to stroke your crotch while licking it, she looked at you with a sly smile

Saya: Oh... You have a big gun hidden from us

She then started to suck on your manhood you moan in pleasure, Houki pulled away and switched with Saya

[y/n]: 'I'm getting close!!!'

Houki then put it inside her she screamed when the whole thing is inside, blood comes out you noticed it, but Houki is smiling

Houki: Finally... I've been waiting for this moment

She began slowly after a while she sped up moaning filled the room

Houki: I'm at my limit!! [y/n] give it to me!!

She came while you came inside her, she lay down exhausted, Saya was now on top of you

Saya: You don't know how long I've wanted this [y/n]....

She started like Houki slow, but she went faster than her after a few moments she leaned down and kissed you forcing her tongue inside your mouth, while she move her hips giving you more pleasure when she pulled away she was smiling

[y/n]: Saya I'm at my limit!!

Saya: Me too

With one final thrust you came inside her, while she cum as well. She laid down beside you and looked at you smiling

Saya: That was amazing....

[y/n]: It sure was, I love you both

Saya: We love you as well

You both drifted off to sleep knowing that when you three wake up the first person you see are the two people who you love the most

a/n: Alright that's about it sorry for the very long wait, hope you all like it

Luka: Good to have you back again

a/n: Yeah

Luka: I missed you

a/n: Is there something wrong Luka?

Luka: It's just that, I thought that you have forgotten about this book and us... And I thought you forgot me

a/n: How could I forget you?

Luka: It's... Just... I

a/n: How can I make it up to you?

Luka: Take me out

a/n: Sure

Luka: Let me get ready

a/n: Okay see you guys