Yuriko Yamanaka

Mother of Kohshiroh and Mitsuro, and wife of Ryuji. A musician who gave up her dream and met an untimely demise.

Dr. Miriam

Akai Ryuu's head in-house doctor. Despite her lack of formal education, she is quite skilled.

Alicia Matsuzaki

Underboss of Akai Ryuu, member of the esteemed Matsuzaki Clan, and mother of Juntarou.

Ryuji Yamanaka

Boss of Akai Ryuu and current heir to the Yamanaka family. Father of Kohshiroh and Mitsuro, husband of Yuriko.

Akihide Shimazu

CEO of Botan Corporation and biological father of Eisuke.