Ryuichi Ostuka

Ryuichi Otsuka is the crossbreed son of Megumi Otsuka and her nightbreed possessed fiancee Ryuichi Taki. He is half-human and half-nightbreed.

Episode 3
Ryuichi is conceived after Megumi rescues his father from Shido Tatsuhiko, who tried to kill him as he had been taken over by a breed, and has sex with him.

Episode 4
The NOS is concerned by the potential danger the crossbreed might pose and so attempts to kidnap Megumi and abort him before he is born. This is stopped from happening by Shido, who rescues him and his mother. Ryuichi has been born by the end of the episode, and shows all the signs of being a healthy human boy. It is unknown if he inherited any nightbreed traits from his father or if they will ever show up.