Shizuka Kusanagi

Godous little sister who is in her 3rd year of middle school. Also a member of the Tea Ceremony Club along with Yuri. Worried that her brother is becoming like their grandfather a natural player she is very strict with him to try prevent this. However it is also suggested that her being strict with her brother is actually a cover up for her jealousy as she may have a brother complex with Godou.