Natsuki Seba 17 years old Male Has a younger brother, Mafuyu Seba. A haughty guy(?). He is selfish and does things at his own pace, often ignoring others and showing a cunning side by using people, but he generally maintains decent relationships. He cherishes his younger brother Mafuyu deeply; though he doesn't express it outwardly, he always comes to rescue him in moments of crisis. Black panther beastman. Has three beauty marks under his eye.

Mafuyu Seba 11 years old Male Has an older brother, Natsuki Seba. Often complains and shows weakness. A major characteristic is that he always wears a mask-like accessory covering the lower half of his face. Suffers from severe mysophobia (germaphobia). He has a sensitive and blunt personality, but occasionally acts like a spoiled child toward the adults around him. Because he has worn a mask since he was young, his bare face has never been shown. Black panther beastman.