Kazuki Mizuhara

Kazuki Mizuhara (水原 和輝, Mizuhara Kazuki) is a student of Shishidō Academy, the class representative of Tomu's class, and the roommate and best friend of Tomu Shirasagi. Although he usually acts as a cautious supporter rather than a frontline gambler, he becomes one of Tomu's most trusted allies and later reveals hidden talent in poker.