Backstabbed in a Backwater Dungeon: My Party Tried to Kill Me, But Thanks to an Infinite Gacha I Got LVL 9999 Friends and Am Out For Revenge (Manga) Vol. 3

Light and company find their adventuring interrupted by reports of suspicious killings in the very same dungeon they're crawling. Tempted by the prospect of boosting his rank--not to mention the generous reward promised by the Dagas Adventurers' Guild--Light sets off to catch the killers. The hunt takes a personal turn, however, when a party of innocent young adventurers gets slaughtered in the crossfire. Light's quest for vengeance will have to wait as he turns his wrath on a new target!