Isekai-gaeri no Moto Yuusha desu ga, Death Game ni Makikomaremashita
異世界帰りの元勇者ですが、デスゲームに巻き込まれました
During a school trip, a high school student experiences an ordinary day with classmates until a man in a military uniform initiates a deadly game. Participants must fight to survive, as the weak are eliminated. Unbeknownst to the organizer, one of the students is a former Hero from another world who possesses considerable strength.
