Taiga is 21 years old, "but 18 at heart". He's the landlord. Both he and his father are public prosecutors. His father worked on the case of Shimana's mother's death. He, like his father, always wears a kimono. He always supports Asahi, Shimana and Zen, though he himself doesn't like women, thinking they're all weak and can't be trusted.

Spoiler

It is revealed later that his real name is Taiyou.

Spoiler

He might even have feelings for Shimana.