Yuna, who enjoys a carefree life in another world. While staying in the royal capital, Yuna and Fina hear rumors about a mysterious thief who repeatedly steals jewels from nobles and returns them. Thinking it sounds interesting, they decide to visit the mansion where the thief is said to reside...? Dressed in cheat-level cute bear gear, the ultimate bear girl Yuna embarks on a thrilling adventure in another world in "Kuma Kuma Kuma Bear." A completely original story supervised by the original author begins!