Satsuki Tsuchida

Satsuki Tsuchida (土田 皐 Tsuchida Satsuki) is the younger sister of Naozumi Tsuchida who visits the kindergarten to see how he has been doing since he left home. She seems to care very much for her brother's well-being and apparently has a brother complex. She is often very eager to receive any sort of acknowledgment from Tsuchida and has a tendency to get jealous whenever Tsuchida gets close to Nanako Yamamoto.