異世界迷宮の最深部を目指そう (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: --Welcome back, Uzunami Aikawa! Aikawa Uzunami, a boy who wakes up in an unfamiliar corridor, is caught up in a battle with demons without knowing why. His mysterious skill runs amok, and he narrowly escapes with his life. He narrowly escapes with his life, and is magically healed of the poison he received from the demons by a mysterious girl, Lastiala...yes, just like in a "game. When he manages to get above ground, he learns that th...