Y/N was in her room laying on her bed reading the book when Eijiro suddenly barged in her room witout knocking.

"Y/N!!!" he yelled.

"Ahh!!" she screamed, throwing her book right in his face.

"Ow!!"

She realized it was him and glared at him.

"Next time, knock! I thought you were a villain for a moment! Geez!"

"Sorry! I'll knock next time, but that's not it! I have an important news!"

"What is it that is so important after barging in my room?"

"Tomorrow is Bakugo's birthday!!" Eijiro exclaimed with his eyes sparkled in excitement.

"Katsuki? Wow. I...never celebrate someone's birthday before..."

"Don't worry! I'm sure there will be something that will make him at least happy."

"Like what?"

"Buy him a gift! I already have planned what I will buy for him!"

"Gift? I don't know if I have enough money for it. Can it be made? Like handmade?" Y/N asked, getting where this is going.

"It can be anything! As long as it's Bakugo-like! Something he might like that fits his anger personality. You're gonna give him something?"

"Actually, yeah. I'll start working on it now. I have nothing else to do."

"Awesome! I gotta go shopping right now! You coming?" Eijiro asked.

"Nah, I'll stay here. I have some things that will honestly have Katsuki love his gift." she said, thinking about what Katsuki likes.

"Okay. I'll see you there! Oh! And once we head to school early, we're going to surprise him before class starts. Everyone had already planned a surprise for him as well as gifts." he said before running off in speed, surprising her.

Looks like he's getting a lot faster if it wasn't for her running training. Y/N then closed the door and looked around and went through her stuff. As she was looking around, she accidentally hit her head against her bookshelf, causing one of her book to fall down to the floor and it opened some pages. She went over and picked it up, but stopped to see it was one of her dinosaur books where it shows pictures of them. Her eyes landed on the T-Rex. She could tell that it's scary and fierce. She also remembered Denki was afraid of it after hearing some deaths about people being eaten by one.

"It's the KING of the dinosaur we're talking about!! What if it eats us all?! Will it be the end of the world?!" Denki screamed shaking his head.

That's when the idea popped out of her head. She opened her closet to see a box of sewing kit and grabbed it and placed them on the table as she grabbed some black and orange clothes and a sewing machine and some cotton that she might need to make another present for Katsuki. She placed them all on the table and started working on them as she took out a sewing needle.

The sound of chuka, chuka, chuka was heard as the needle punches through the fabric. She had been working on it all day until it was night time as she did a finishing touch before placing them in a wrapped up box, tied the ribbon, and put it inside the gift bag as she placed the second one inside last. Once she was done, she wrote Katsuki's full name in a nice fancy word. Y/N started to yawn as she look at the time to see it was already 8 PM and she grew tired and rested her head against the desk and fell asleep.

Eijiro who just came home was about to call Y/N for dinner as he opened the door without knocking again, but found her already sleeping. He looked at the stuff she has been working hard on and it is a lot. He smiled at the sight of her sleeping as she had a calm face. Eijiro went over to her and carefully carried her in bridal style and placed her on her bed and tucked in the blanket on her. Y/N snuggled into the soft matress, making him blush. He leaned down and kissed her on the head before leaving the room and shut the door quietly. As he head over to the dinner table, he realized what he just did and covered his already red face.

"Oh my God! I just kissed Y/N on the head!! What the heck is wrong with me?!!!!"

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Today is now the 20th in the morning as Y/N was inside her classroom along with Eijiro as she held the gift bag close to make sure it is not ruined. Everyone else is waiting for Katsuki to come. Shoto was confused of what was going on and walked over to you.

"What is going on? Why are they all standing by the door?" he asked.

"You mean you don't know?" Y/N said with wide eyes as he shook his head.

"Today is his birthday. That's why. Because we have a birthday present for him."

Shoto then realized and his eyes widened in fear as she had never seen him like this.

"I didn't get anything for him. I forgot.."

Y/n frowned upon hearing that and then thought of something that will surely won't make Shoto feel left out and grabbed something.

"Here. I was about to give it to him, but since you're the only one that doesn't have anything for him." she said showing him the small wrapped envelope with a bomb logo on it.

"But it's your gift to him. I can't do that."

"Don't worry. I already have two gifts for him." Y/N assured him with a smile.

"...Thanks, Y/N." Shoto said with a small smile with a small blush on his cheek and took it.

Just as the door was slide open, Katsuki is here and the party popper was released, surprising him.

"HAPPY BIRTHDAY, BAKUGO!!!"

"Hah...?" that was all he said until he suddenly grow angry at Izuku who was sweating in nervousness. "You bastard! Was this your idea?! Fucking Deku!!"

"Woah, woah! It wasn't Midoriya! Honest!" Eijiro said, defending Izuku. "We have been friends for weeks and we wanted to know your birthday."

"Seriously..?"

"Yeah! Oh, and here is your present!" he said, giving him the wrapped up gift.

Katsuki was surprised that his classmate just gave him a gift as he opened up the rest of the presents after opening Eijiro's as the rest are just like Katsuki would like. When Shoto went over to Katsuki, Katsuki thinks that he's going to give him a lame present that will make him mad.

"Here."

Shoto doesn't know what was inside of that envelope as he forgot to ask her what it is. Katsuki tore off the envelope and was shocked to see this.

Shoto turned to you as you wrote the paper before showing it to him. He nodded and turned to Katsuki.

"This is the shark bomb bracelet. Hope you like it."

Katsuki didn't say anything and just nodded and held it. Y/N pumped her fist in joy as she gave Shoto a thumb up and he thumbed up her back. Everyone else gave more gifts to him as well as Izuku who had enough courage to come up to him. It was too much as he struggled to hold them. Y/N felt bad that he had too much gift for him to carry and decided to give him hers after school. Katsuki doesn't know what to say as he stood there until Aizawa came in.

"Oh? So it's Bakugo's birthday, huh. Do you want extra assignment from me?"

"No, I don't...!" Katsuki growled and head over to his desk and placed his gifts in his school bag as the class started.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In the afternoon, the school was over as everyone grabbed their stuff and started heading home.

"See you, birthday boy!"

Katsuki didn't reply as he already left the classroom, carrying his gifts with him. Y/N looked over at him as he disappeared. She told Eijiro that she'll come home with him right after as she has something that she needs to do and followed Katsuki. Katsuki was just walking passed the cherry blossom trees when Y/N stopped him.

"Katsuki, wait!"

He froze and blushed to hear your voice and looked back.

"...What do you want, Lizard Freak?"

"I wanted to give you this." Y/N said, showing him her gift bag while trying not to get mad at the nickname he gave her just now. "Sorry, that I didn't give it to you sooner. You had so much gift and I didn't want you to carry too much stuff."

Katstuki never expected Y/N to actually give someone a gift even though they have been friends for a week, she already likes him as a friend. He took the bag from her and was about to open it when she placed her hand on his.

"Don't open it yet. It's a surprise and I want you to see it when you go home." she smiled at him, making him blush again. "Happy birthday, Katsuki."

With that Y/N gave him a hug and went straight home as Eijiro followed her and waved Katsuki goodbye and left. Katsuki couldn't help but smile for a bit and went home.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Once he was home, he went straight to his room without greeting his mom that he's home and closed the door. He placed all the gifts from his classmates on his desk as he will open the rest later and opened the gift bag from Y/N. He took out the wrapped up box and tored it off and opened to see new clothes he had never seen and decided to change as he did. He looked at himself in the mirror and finds it not bad.

"She really made this?" he asked and looked to see a note and read it.

"Dear Katsuki,                                                                                                                                                                    Hope you like it. I sew it myself with creativity. I hope I found a right size for you. Plus, I think that T-Rex really fits you since you called yourself 'King Explosion Murder.' LOL                                  From, Y/N"

He half-smiled and looked to see another gift from her and he took out a red T-Rex stuffed plush toy.

"....Thanks. Y/N..."

After those words, Katsuki's mom barged in his room about to yell at him when she saw him smile and saw what he was wearing.

"Who gave you those clothes? They must really have talent." she curiously asked.

"Nothing, old hag."

She didn't listen to him and snatched the note he was holding as his other hand held the plush. She read it for a bit and smirked.

"Who is this Y/N? Isn't that the girl you fought against from Sports Festival?"

"Shut it, old hag! It's nothing!" he yelled.

"Then, why is your face red?"

"Nothing!! Get out!!"

Katsuki's mom laughed and he can't stop his face from going red.