That No-Good Guild Clerk Is Actually an S-Rank Summoner. To Clock Out on Time, I Beat the Bosses in Secret Then Got Kicked Out.

Ochikobore Guild Shokuin, Jitsu wa S-Rank Shoukanshi Datta: Teiji de Kaeru Tame, Ura de Boss wo Taoshitetara Tsuihou saremashita

落ちこぼれギルド職員、実はSランク召喚士だった～定時で帰るため、裏でボスを倒してたら追放されました～