Look scary to most peoples but actually very a nice person.
Kusumi is his best friend. He even got angry when someone badmouth him.
Chiba is aware Erika's feeling toward Kusumi and supporting them.
Chiba is unaware Yukko's feeling toward him. It is heavily hinted that he reciprocates Yukko's feeling without noticing his feelings due to his lack of experience with romance.
- He love sweets.