Mobu kara Hajimaru Tansaku Eiyuutan

Takagi Kaito is an ordinary high school student who explores dungeons in Japan, hunting slimes for pocket money. A low-status “mob” character, he quietly admires his childhood friend, the queen of the school, from afar. One day, Kaito encounters a rare golden slime. Defeating it earns him a valuable drop: a servant card that can summon mythical beings. When he uses the card, a beautiful warrior maiden appears, opening the way for Kaito to leave his routine life as an explorer and begin a new adventure.