One day while questing, he entered a dungeon and discovered a young girl being partially devoured by the weakest monster type - a slime.

Even after entering a fantasy world, Hajime remains weak. But when all hope is lost, he begins his journey to become the strongest of them all.

After Dai Star stage performers exploded in worldwide popularity in the 20th century, 16-year-old Kokona Ootori follows her dream of becoming a World Dai Star by auditioning for the Sirius theatrical troupe.

Middle-aged businessman Ryoma is reincarnated in a magical world by three gods. He's a child again, and he spends his days with his tamed slimes.