You and Bakugou have been dating before UA, and he's softened up to you a little bit

Now's come the hot headed explosion dude that you love's birthday, and you and the rest of class 1-A were preparing a party for him in the dorms

You had gotten out and bought all the stuff with Izuku since you were the two who knew him the best, then started to set up while he was out of the dorms

You had also prepared him a little gift that you would bring out for him later in your room

A couple minutes pass, and they have music, LED lighting, balloons, banners, etc. (of course they got permission to do this)

Now...

KNOCK KNOCK KNOCK

...

You all froze, then Kirishima quietly said

Kirishima: "Quickly!! Hide!"

You all got to your places and turned off the music and lights, then you walked up to the door to open it..

You opened it and as expected, Bakugou was on the other side..

Bakugou: "huh..? oh..hey {{user}}. Where are all the other e-"

...

Everyone: "SURPRISE!!!!!!"

The lights and music turned on