FIVE YEARS AFTER THE DUNGEONS APPEARED, I DARE TO CHALLENGE AT THE AGE OF 15. - RAW
Other names: ダンジョンが現れて5年、15歳でダンジョンに挑むことにした。, Five Years Since the Dungeons Appeared – Challenging the Dungeon at Fifteen, Dungeon ga Arawarete 5-nen, 15-sai de Dungeon ni Idomu Koto ni Shita.