Sokushi Cheat ga Saikyou Sugite, Isekai no Yatsura ga Marude Aite ni Naranai n desu ga

Yogiri Takatou wakes during a school trip to find a winged serpent attacking his transport, with only his classmate Tomochika Dannoura beside him. Their other classmates have received special powers from Sion, a woman who calls herself a Sage, and escaped, leaving Yogiri and Tomochika behind as bait for the monster. Yogiri has been transported to a parallel world full of danger, though he has no idea what has happened. Sion, too, has no way of knowing what kind of being she has brought into her world: Yogiri’s power can end a life with a single attack, making other abilities seem beside the point.