白河 静流

The older sister of Hotaru, Shizuru is in her third year in University. She is especially good at making deserts which Hotaru loves to eat. She has an interest in and is good at professional wrestling. She also has a habit of spoiling and caring about Hotaru, helping her out with her troubles with Ken. She is a kind-hearted person in nature.

In "Omoide ni Kawaru Kimi ~Memories Off~" :
Shougo's senior at the university, a fourth-year student of the Literature Department. Shizuru still has a passion for wrestling and is training her techniques on both Koyomi and Shougo.

She also is a secondary character in Memories Off ~Sorekara~, working as the deputy manager at the same restaurant as Isshu.