You're the only one, my only one (Yandere Hajime Iwaizumi x Reader)

Chapter 15- Questioning

But for some reason it wasn't a good sign.

He is being suspicious.

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*Sebastian POV-*

The three of us finished our deserts and Oikawa was sitting and chatting with us. Y/N paid for our food and F/N was talking non-stop to Oikawa who, surprisingly, talked back.

All of us exited the Café, where Y/N was paying the bill, and we all walked to the park and walked around.

"Oikawa-San?" F/N started. "Where did you meet Y/N?"

"Oh that! I was having a walk around the neighbourhood and I accidentally fell over a rock and Y/N happened to be their and she helped me out!" He replied back with a smile.

"Ahhhh yes that day! I got so scared because I thought you got hurt!" Y/N added.

I then said something because I hadn't had a chance to say anything at all, "Well that was very kind of Y/N so thank you Y/N for taking care of Oikawa!"

"Sebastian why are you talking like that? You aren't my big brother?!" Y/N said while giggling.

"Oh c'mon Y/N! Sebastian is just complimenting you!" Oikawa said. "I hate to say it but yes he is." F/N said while being a bit of a tsundere because she is complimenting her very own brother, which happens to be me.

"Why yes I am!"

"SSSSHHhhzhhhhhhshzhs!"

A few minutes later, Y/N started to speak and and say, "Oh crap! I forgot that I have to do a report on my Science Practical! Sorry guys but I have to go now! Thanks for the food!" Then she ran off.

"Okay byeeeee!" F/N yelled. "Oi Sebastian let's go home now!"

I was about to say yes, but then I looked over to Oikawa and remembered that he looked scared.

"F/N you go home, I want to talk to Oikawa a little bit more if that's fine with you Oikawa?" I said.

"Yeah don't worry it's fine! I would also like to talk with you for a bit!" He replied.

"Okayyyyyy....... Bye Oikawa-San!" F/N said while running away.

I looked at Oikawa once F/N was no where to be seen and Oikawa looked at me.

"So what did you want to talk about, Sebastian?" The tall man infront of me  asked.

"Oh yeah........ about that......." I started. "So when F/N asked you and Y/N that 'Are you two dating'-"

Oikawa then looked down and blushed which wasn't that surprising because who wouldn't blush when someone asked you are you dating someone.

"Anyways........ when F/N asked that question, Y/N just said no and I then looked at you to see what your reaction was and you looked.......... scared?"

Oikawa looked up stopped blushing and his eyes were wide open. He then said, "Huh?! I looked scared?! Are you sure Sebastian? Cuz I would've known that I was scared! I think you are seeing stuff, Sebastian."

That was clearly a lie.
I clearly saw him being scared.

Moments after, Oikawa's phone began to ring. "Oh sorry Sebastian! My mother is calling me! I have to go now, bye!" He then ran off just like how Y/N and F/N ran off.

I was just standing there there with a questioning look on my face. I then realised that I was standing there doing nothing and decided to go home.

While I was walking home, something was bugging me that it was something bad....... something bad about Oikawa......

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