Genshi Shounen Ryuu

A pale-skinned infant is born in an ancient era and rejected by those around him due to his appearance. Abandoned, he is taken in by an ape named Kitty and raised as her son, growing into a kind man named Ryuu. After Kitty is killed by a figure named Tirano, Ryuu seeks revenge and the truth about his origins. During his journey, he encounters two siblings, Ran and Don, and together they face various challenges and dangers.