Seara Arisugawa  

, 有須川せあら

A sixth-grade student with a striking appearance who developed feelings for Shuhei Seto. Despite being athletic and outgoing, Seara has always been honest about her emotions. Her motto is "kindness begets kindness; cruelty breeds resistance." To get closer to Shuhei, she chose to stay with the Seto family even though her parents relocated to America. At her previous school, Seara was known as the "God of Plagues" due to her reputation for hurting those who were kind to her. However, at her new school, she has become popular and is striving to better herself for Shuhei's sake.