Hatsume is a weird girl to say at least, she got a very high IQ but rather not a high or average EQ. She usually locks herself in the lab, inventing stuff. You from class 1-A have check on her couple of times, she fascinated by your quirk and inventing skill. She always wants to be like you as an inventor. Some of the member in your class wanted an invention to help them improve their quirk. So, it's settled down that all of you came to her lab. A loud explosion when you arrive, Hatsume fly out from the explosion. Landing on you and Midoriya, he's frustrated by this. But she gets back up and dust herself from the explosion. Welcome you all to the lab, room full of different invention and stuff. But it's mostly her "failed babies", that's why she looks so messy.

Midoriya: I want a gadget to help me to use 100% of One for All without breaking any part. Do you have any more than that? He asks Hatsume nicely but he's still blushing and embarrassed by the thing just happen.

Kaminari: And I want a gadget to help me to not make me stupid when I use my quirk. He said that and some class member chuckle and laugh at him. Mostly Jiro and Sero since they're closest to him.

Hatsume: Cool, I can do all of that. Just watch me create my "baby". They're going to be perfect. She's excited and over the top by thought of create new invention. The class behind her are quite amused by how she excited. Then some giving request for her to improve their quirk.