Saiki x reader (Completed)

Birthday??

Today's class was finally over. I was packing my things when I heard Nendo speaking. "Hey pal, little guy here wants to talk about tomorrow." Nendo said to Saiki.

"What?"

"You idiot!"

"Sorry Saiki, we have an errand today!" Kaido said and he left with Nendo and Aren.

"What's going on?" I looked at them as they awkwardly and hurriedly left the class.

"This is evil bullying." I heard Saiki say and I smiled and walked towards him.

"Tomorrow's your dad's birthday right? What are you guys doing?" I asked and he shrugged.

"Wanna listen in to their plans?" He asked.

"Sure." I smiled and followed him as he used his powers to make a student look like him so the others would see "him" leave school.

We then stood outside of the classroom where they were planning the party. The plan was for them to go to Kaido's house, then Kaido would get drinks, Aren would lead Saiki to the party room, pull the party popper, cueing everyone to surprise him. I looked at Saiki's face and he looked annoyed. I rolled my eyes and poked him with my hand. 

"What?" he asked me.

"Even if it's not your actual birthday, you should at least act happy tomorrow if they're planning all this for you." I said and he shook his head.

"That's troublesome." he said and I crossed my arms. "Actually, why do they think it's tomorrow?" I asked him and he shrugged.

"Jairo, I'm impressed that you figured out Saiki's birthday." Teruhashi said.

"Oh, I ran into his mother in town the other day, so I asked her. Saiki thinks that we don't know., he will definitely be surprised." I heard Kaido say.

"They sound happy." I said looking at Saiki.

"Yes but.. as you know, my birthday is not tomorrow, it's actually in August. If they learn it's not my birthday, their plans will fall apart. Their preparations will go to waste, but don't blame me." he said.

"They even got a present for you." I said.

"Hairo made you a wood model." I said.

"Don't want it." he answered.

"Teruhashi and Yumehara made you a cake." I glanced at him.

"It's gross. Looks like a severed head." he replied and I sighed. "Thank goodness they haven't made it yet." he said.

"That's rude." I said pinching him.

"Well, now's my chance to tell them." he said reaching for the door.

"But we went through a lot of trouble too." I heard Aren's voice.

"Aren and Mera made you a birthday video." I laughed softly. 

"I don't even know them.." he said and sighed. "Did I do something to deserve this? This is harassment in the form of kindness." he complained.

"Kaido wrote you a poem." I said and listened to it. After listening to the entire thing I smiled and glanced at Saiki. "I give up, they can do what they want." he said.

"Hey, I saw that. You smiled. You like his poem." I teased and chased after him and walked with him out of school.

The next day, Saiki went home early, even though he was on cleaning duty. "Wanna come over?" he asked.

"Sure." he said.

So, apparently his friends came over to his house, and we were still outside, and he hypnotized them into thinking that his dad was him. "I'll wait in your room." I said and pat his back. "Good luck getting inside.

"Hey guys!" I smiled at everyone and smiled at Saiki's father. "Happy birthday, I got you this." I said giving me a box.

"Thank you (Y/n)-san!" he smiled at me and I smiled in return. He then let al of us inside. I motioned that I'd be going upstairs and he nodded and I quickly went up before anyone could see me and ask questions.

When I got up the final step, Saiki teleported upstairs, then his father came up as well. Then Saiki explained everything to him.

"I see, I thought it was strange. The surprise is over, do you want to switch places?" his father asked.

"No, keep going." Saiki said with a thumbs up.

"You want me to keep pretending?" his father asked.

"It's not my birthday, I can't pretend that it is." he responded.

"I 'm not you, Kusuo. I can't pretend that I am." his father replied.

"I'm counting on you. I can't respond to their kindness." Saiki said to him.

"Your dads being embarrassing." I said.

Then the camera broke, then they broke it. It seemed like a fun party. Saiki grabbed my hand and pulled me back upstairs. we sat in the hallway, and he leaned his head on my shoulder since he was tired.

"I'll get a book from your room." I said standing and going into his room and picked a random book and came back out and sat next to him. He took the book and set it on his lap and I leaned my head on his shoulder so I could read it too. His dad then came up and was happy. 

"Well? You want to switch soon?" he asked Saiki.

"No thanks. Hurry back now. I would only be a buzzkill." Saiki responded.

"So what?" his dad asked. "Go on Kusuo. You must feel some gratitude towards them. You didn't want to hurt their feelings, so you asked me to cover for you. But it's not right. They all came here for you, Kusuo. Even if you don't want to hurt their feelings, you should go to them." his dad said before leaving us.

"Who do you think you are to lecture me?" Saiki asked.

"I'm your father!" he retorted.

I stood up with Saiki and held my hand out to pull him up, "Wanna party?" I asked and he smiled and grabbed my hand and we walked all the way downstairs.

We reached the door separating the room they were in, and ours. "Now, how to get rid of them." he said and I hit Saiki over the head.

He then opened the door, and the party continued. "So, what are you gonna do on your actual birthday?" I asked as we both mingled among everyone.

"Who knows." he answered back.