Watabe Shiina (渡部椎菜)

The younger sister of Watabe Sousuke, one of Riku’s classmates. She’s another one of Hazuki’s friends at the Kindergarten and is very shy. She always carries around her stuffed animal with her wherever she goes. She greatly loves her Grandmother and won’t hesitate to repeat anything and everything that her Grandmother tells her, no matter how strange.