|Other names||Sou-kun (by Kasumi)|
|Family||Two older sisters|
|Physical and Vital Statistics|
Sosuke doesn't seem to have any others friends aside Tatsumi and even his sisters were surprised when he brought Tatsumi to their house because they thought he didn't have any friends. His family is wealthy and he lives in a big house with a big bathtub.
- Chapter 5
- Chapter 35