My Instant Death Ability is Overpowered

Yogiri Takatou missed out on a few things while napping during a school trip... mainly how his entire class got transported to another world and how a curious sage gave everyone special powers! When Yogiri wakes up, he and classmate Tomochika Dannoura must defend themselves against a dragon. Out of options, Yogiri reluctantly agrees to team up with Tomochika and fend off danger with his Instant Death ability. If he can keep his eyes open, that is...