Ohya Kazumi manga
It's said that Thomas Edison stuffed all of his knowledge into his final invention, a screw. Presently, said screw, is buried inside the head of Matsunaka Spica, a high-school girl!!! When Matsunaka Spica's thoughs rise to a high enough level, she can create amazing inventions that would normally be impossible to construct!!
Spinoff of Assassination Classroom serialized in Saikyou Jump