Living in a secluded area in the forest far from civilization is Ryouma Takebayashi, a young child with an unusual hobby of raising and caring for different types of slimes as pets. Despite his young age, Ryouma is also physically strong and possesses exceptional talent for magic, granted by three divine beings after he overcame several obstacles in his previous life. They gave him a second chance to appreciate the beauty of life, and for three years, he lived in peace, away from the hustle and bustle of the rest of the world. However, a group of individuals would soon change Ryouma's life forever. While wandering in the forest, he came across a group of soldiers who were tending to their wounded comrade. Without hesitation, he offered his assistance, and his kindheartedness led the group to invite him on their journey to the Duke's enclave in the nearby town. Excited to explore the vast outside world, Ryouma eagerly accepted, and their adventure began.