Start at high school DXD

This is a work of fiction. Names, characters, businesses, events, and incidents are the products of the author's imagination. Any resemblance to actual persons, living or dead, or actual events is purely coincidental. --- Being transferred to a different world Without almost any cheats, aside from a library that only contained the fundamentals of magic from various worlds. Would he be able to keep up with the challenges he would encounter in the future? [English isn't my first language.] [I don't own anything I use from other works] [The cover is not mine].