Hell Teacher Nube OVA (1998)
Nube fights a demon who resides inside walls, confronts a young spirit who wants her harmonica back, and in the end he must battle a powerful demon named Zekki - brother of Baki, demon that resides within Nueno.
Nube fights a demon who resides inside walls, confronts a young spirit who wants her harmonica back, and in the end he must battle a powerful demon named Zekki - brother of Baki, demon that resides within Nueno.