Kotomi Kitashirakawa, whose name means "pretty little rabbit," is the granddaughter of Project Blue commander Lord River-n-White. Her older sister, Komomo Kitashirakawa, is the frequently-kidnapped princess of Bunnyland, and Kotomi is considered to be the "second princess." Kotomi is devoted to her sister, although she gets impatient or frustrated by Komomo at times. After the events of Rabio Lepus, Kotomi joins the Bunnyland army in order to protect her sister.