Bofuri: I Don't Want to Get Hurt, so I'll Max Out My Defense., Vol. 2 (manga) - Yuumikan - Bog

Having advanced to the second stratum, Maple and Sally prepare for the upcoming event: a week-long exploration fest and battle royale. But there’s one attack that no amount of defense can protect Maple against—the admins nerfing her! With limits placed on her invincibility and the viability of her extreme build in question, Maple will have to find new ways to break the game if she wants to keep up with the top rankers!