My Isekai Life: I Gained a Second Character Class and Became the Strongest Sage in the World! manga volume 19 features story by Shinkoshoto with art by Ponjea and Huuka Kazabana.

Yuji learns of a book containing important information regarding the evil organization known as the Laboratory. Unfortunately, the book is locked up within the Royal Academy, meaning the only way to access it is by...enrolling as a student?! Faced with his dreaded nemesis, the entrance exam, will his skills be good enough to let him pass?