(A/N: In this AU, the war factions between the Angels, Devils, and the Fallen Angels didn't happen and everything is just normal. Everyone is just living their normal lives.)

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-No one's P.O.V-

You are (Y/N) (L/N), a normal 18-year-old male high school student who attended a place called Kuoh Academy. Everything was normal for you there and made friends with everyone. They all liked you because of your kindness and friendliness.

That's when a beautiful young lady with long red hair caught her interest in you. Her name is Rias Gremory, an 18-year-old female who attends Kuoh Academy. She first met you when you bumped into her around in the corner.

You became friends with her and once you got to know her for a while, she seemed to be a daring type of girl and adventurous. She sometimes sneaks out of her house for some fun in the night with her friends.

Rias is also a dominant woman around with you, she can flirt with you at times and would tease you. The girls were jealous and the boys were smirking, thinking that you were lucky to have her.

-(Y/N)'s P.O.V-

The classes were now over as the students, including went back home. Once I got back home, I took a refreshing shower, cooked dinner for my family, then play some video games. 

A few hours later, it was now currently 10:30 pm in the night. I was in my bedroom, reading a book while listening to some music on my phone. That's when I hear...

https://youtu.be/ewmiJyHR3T4

(Y/N): Ah!

I was startled at that noise and it was coming through my window. I looked over to my window and saw a familiar face.

(Y/N): R-Rias!?

Rias: Hey cutie~♥

She said with a flirty wink behind the glass window as I got up from my bed, opened the window, as she lets herself in. 

(Y/N): The hell are you doing here? And...how did you know where I live?

I asked with curiosity as Rias giggled at my questions.

Rias: That's a secret~!

(Y/N): Rias...

I said, giving her a dead stare before she laughed a little.

Rias: Ahahaha! Okay, okay~! To your first question is that I want to sneak out with you. And the second question is that I kind of followed you to know where your house is.

(Y/N): Seriously? You followed me all the way here just to ask me to sneak out with you?

I said with a sigh.

Rias: Oh come on, I can't leave a cutie like you out here~♥

You sighed again as Rias looks around in your room.

Rias: Wow, this is a nice room that you're living in. Plus...

She then sits down on the bed and bounces a little and that made her breasts bounced a little. You looked away for a moment before Rias spoke up.

Rias: Your bed feels nice and soft, it's much better than mine at home. 

(Y/N): Sheesh, it feels like you're my big sis. Just entering my room to relax...

Rias: Oh? Is that so~?

(Y/N): Oh come on, can't you go home now?

Rias: Not until you sneak out with me. And besides, I've never sneaked out with someone like you who's young and cute~♥

She said with a wink and a finger gun at me as I sighed in defeat before speaking up. 

(Y/N): Alright, fine. Just this once. 

Rias: Thank you~!

She then ran up to me with a big hug as my face was buried into her chest as I sighed.

-Slight Time Skip-

So right now, Rias and I carefully climbed out of my bedroom window as I closed the window behind me. 

Rias: Alright, let's head out in the night~!

(Y/N): Fine, fine. I hope this will be worth my time with you.

Rias: Oh don't worry, we can do something fun...or maybe more than just that~

Rias said seductively as she licked her lips. You had a huge blush appeared on your cheeks as Rias then began to laugh at your reaction.

Rias: Ahahaha!

(Y/N): S-Seriously, stop it...

Rias: Ehehehe, come on now~! Let's head out!

And just like that, the two of you began to sneak out in the dark with the moon shining down below you two.

-Mini Time Skip-

It's been at least thirty minutes since you and Rias sneaked out in the night. The two of you were just talking to each other along the way and do some stargazing.

(Y/N): By the way...

Rias: Hm?

(Y/N): I'm starting to think that I'm liking this.

Rias: You mean sneaking out?

(Y/N): Yes, but I also hate it because I would get a lack of sleep.

Rias: Ahaha, I see, I see.

(Y/N): But you have a lot of energy on doing this, did you drank coffee or something?

Rias thinks for a moment before smiling at you and spoke up.

Rias: Yeah, I only drank for at least half of coffee.

(Y/N): Heh, no kidding.

Rias: Sure do~

Just then, she groped your butt after saying that, making you blush a little.

Rias: Oh my~ Looks like someone is liking that~♥

She said in a seducing tone as you facepalmed in embarrassment.

(Y/N): Can you...not? 

Rias: Alright, alright...

The two of you quieted down a little and continued walking with your head down. That's when Rias spoke up. 

Rias: Wait, who the hell is that? 

(Y/N): W-What...?

Rias: In front of us. 

Rias pointed in front as you looked towards the direction to where she was pointing, and to your shock...

It was a man...dressed in all black. 

(Y/N): Who the hell is that?

You muttered to Rias as she replied back.

Rias: I have no idea.

Both you and Rias continued to stare at the man down who was standing still on the sidewalk.

(Y/N): I think we should just leave.

Rias: What? Are you a coward? 

(Y/N): Are you stupid? What if this guy pulls out a weapon? Like...a knife or some sort.

Rias: Yeah, right. 

She said sarcastically as the two of you turned to the man, and this time, he started waving his hand at you two. He was waving his whole arm, not a gentle wave. Suddenly, it turned into a transition into a come here gesture with his arm.

You and Rias looked at each other, thinking that this was really suspicious. Rias shrugged it off as if it was nothing and started to shout at the guy.

Rias: Hey, asshat! Are you gonna fight or what?

Rias says with an arrogant smirk on her face and quickly disappeared as the man pulled out a knife and started running at you two.

(Y/N): Oh crap, run!

Eventually, you and Rias took a sprint burst, and ran the hell out of there. While running, you looked back to see the man still chasing you both.

(Y/N): Oh goddammit! Why did you shout?!

Rias: I really thought he was just messing around!

(Y/N): You idiot! 

Rias: I'll owe you something after this!

You and Rias looked back to see the man still chasing behind you two. The two of you looked at each other and nodded. 

Both of you decided to split up. You went to the left as Rias went to the right. You looked back to see the man chasing Rias. 

You didn't decide to whether help her or not, so you just ran back to your house.

-Mini Time Skip-

A few minutes of running back to your house as you began to pant to catch up your breath.

(Y/N): Whew, good grief...

You said as you looked back at the streets and you muttered to yourself.

(Y/N): I hope you'll make it out of there alive, Rias.

You said as you were about to climb back to your window. That's when you felt a hand on your shoulder.

You felt your heart dropped to your stomach as you stood there, frozen in fear as you muster up to come up with some words.

(Y/N): W-Who's th-there...?

You asked to no one in particular with your voice trembling as someone's hand gripped onto your shoulder. You slowly turned around and to your relief...

Rias: Hello there~!

You let out a sigh of relief as you spoke up.

(Y/N): Jesus, you scared the hell out of me.

Rias: Sorry about that, ehehehe!

(Y/N): Anyways, are you alright? Did he hurt you?

You asked with a worried voice.

Rias: I'm doing fine. I managed to lose my chaser. 

(Y/N): That's good. I don't know what'll happen to you if you were...

Rias: Don't worry about it. I'm just fine. No scratches.

(Y/N): Alright then.

 The two of you yawned as you spoke up.

(Y/N): Man, I'm tired.

Rias: Me too. Hey, do you mind if I sleep in your place?

(Y/N): Seriously? Your parents might get mad at you for staying at my place.

Rias: Oh don't worry, I've been a lot of trouble and I got used to it.

She gave me a reassuring and insisting smile as I sighed in defeat.

(Y/N): Alright, if you insist.

You opened the window to your bedroom as the two of you climbed inside. 

(Y/N): You can use my clothes in the closets and there's also a bathroom in here as well.

You said as you lay down on your bed and let Rias rummaging around in your clothes before picking up something and went inside the bathroom. 

A minute later as you can hear the door creaked open in your bathroom as you spoke up.

(Y/N): Are you done changing? 

You asked as you turned your head towards Rias, but you immediately blushed and see her in her undies and was also wearing your pajama shirt. 

Rias: Like what you see~?

She asks in a seducing tone as you looked away with a blush and spoke up.

(Y/N): Can't you wear something more comfortable?

Rias: Sorry, I only sleep with my undies on, you'll have to get used to it. Also, thanks for letting me borrow your clothes. 

(Y/N): Seriously? 

Rias: Quit complaining, (Y/N). Besides, you never even slept with a girl with her undies on~

She teased as you sighed in annoyance before speaking up.

(Y/N): You know what? I'm just gonna sleep on the futon. 

You said as you tried to get up, but Rias holding your shoulders, making you stop as you looked up at her in confusion. 

(Y/N): Uh...Rias?

You said in confusion as Rias smiled before leaning down and kissed you. 

You were surprised at this action as Rias kissed you with passion. You didn't return the kiss because felt overwhelmed by the kiss. Rias kissed you there for about 8 seconds before breaking it and smiled at you. 

Rias: How's that~?

(Y/N): I...uh...I felt...overwhelmed, to be honest...

You said with a blush on your face as Rias giggled before leaning her body down to you on your bed. She wrapped her arms around your waist and said...

Rias: I love you, (Y/N) (L/N)~

She said with a smile on her face as you were surprised to hear that before smiling at her and returned the hug. 

(Y/N): I love you too, Rias Gremory.

And eventually, the two of you fall asleep together on your bed. 

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(A/N: Alright, stay tuned for more!)