The Boy and the Beast

Kyuuta is a young orphan surviving on the streets of Shibuya when he stumbles into a hidden world inhabited by beasts. There he meets Kumatetsu, a powerful but rough-tempered warrior looking for an apprentice.

The two clash constantly, yet Kyuuta begins training under Kumatetsu and their difficult partnership gradually develops into a surrogate father-and-son bond. Their connection becomes increasingly important when a dangerous darkness threatens both the human and beast worlds, forcing the mismatched pair to rely on the strength and trust they have built together.