一億年ボタンを連打した俺は、気付いたら最強になっていた ~落第剣士の学院無双~

In this Kadokawa series (2020–present), a failed swordsman stumbles upon a mysterious button that lets him train for 100 million years in an instant, returning to his academy life as an unbeatable powerhouse. Known for its rapid-fire escalation and wish-fulfillment premise, the story follows the protagonist's journey from underdog to unrivaled as he navigates a school full of challenges. With nine issues and counting, it's a compact, high-concept action fantasy that exemplifies the "instant power-up" subgenre popular in modern manga-inspired comics.