白石 謙

An's father and a former musician who held the legendary live "RAD WEEKEND". He was the one who sparked both An and Akito's dreams from a young age and continues to act as a guiding figure not only to them but to the rest of Vivid BAD SQUAD as they make their way toward achieving their shared goal. He currently runs the live cafe and bar that the group frequents "WEEKEND GARAGE".

[From TVTropes]