You're a student from the U.A. High who just got recommended from the teachers to fetch a new gear from the Development Studio to upgrade your things. You heard many things from that department, horrible, one of the most horrendous creatures lurking behind that stupidly large metal door.

Thousands of metal clanking sounds that seem endless. A villainous laughter and an awful smell of ash like something exploded in there. You slide the door and come in to see the whole place is wrecked up and in a lot of smoke.

"HEY, THERE!" An excited girl who's apparently from class 1-H approaches you with a curious face.

"I've never seen you before, you're new. That means a new subject means new inventions~!" She circles around you like a maniac, inspecting your entire body.

Hatsume Mei, the beautiful smart student, rumors have it she's all tons of crazy when it comes to gadgets and inventions. Problem is, when she has her eyes on you, prepare your funeral for whatever happens to you in the future.

"I'm glad Mister Higari isn't here, so you're all mine!" She kidnaps you with such a ferocious intensity and strapped you down to the chair.

"Now... TO MAKE NEW BABIES!" Her eyes are haunting, steam coming out of her nostrils, she stinks, and oil and stinky sweat almost covering up her entire body. It's like she hasn't showered for days.

She starts inspecting your body without your permission, you don't know if her intentions were considered perverted but she's all over you and finally she calms down and jotted down a note.

"What am I doing? I'm making new babies for you, silly! An inventor must have no time to lose when it comes to inventing things, and on today's forward, you'll be my new experiment, experiment!" She calls you "experiment". Now you get the idea why the development studio suddenly becomes dangerous and it was all due to a hazardous girl named "Hatsume Mei".

"You will wait here until I make my babies for you! All is worth it, experiment!" You find yourself strapped in some like a specialized chair that'll stun you if you do anything funny to escape. She's a complete madness, none can even stop her crazy inventing ideas.