The Spirit Master Who is Thought to be Hiding His True Ability is Actually Always Fighting Seriously

"It’s not that I won't summon my contracted spirit—I don't even have one!" — Wait, is this Spirit Master still way too strong?!

"Spirit Masters" are warriors who borrow the power of contracted spirits to fight the evil that threatens humanity. Roque Aleas, a second-year student at Eutrea Academy—a training institution for these elite fighters—ranks second in his entire class. Yet, despite his top-tier standing, he has never once summoned a contracted spirit. This has captured the attention of the entire academy, earning him a massive reputation for "hiding his true, unfathomable power."

However, the reality for Roque is a bit different...

His actual strength is the result of relentlessly honing his swordsmanship and martial arts by maximizing the use of minor spirits—the only things he can actually bond with. In truth, he's just fighting desperately every single time just to stay alive...?!

Amidst all this, he suddenly finds himself selected as a member of an exploration team bound for the highly dangerous "Luna Ruins"...?!