Ryuto Sakurai

Ryuto Sakurai (櫻井 流人 Sakurai Ryuuto) is a first-year high school student. He is the foster brother of Amano Tooko.

Background
Biological son of Kanako Sakurai and Suwa Takumi. His father died 9 months before he was born while trying to save a cat.

As Kanako and Yui, Tooko's mother were best friends, he has been very close to Tooko's family since childhood.

Since Tooko's parents died in a tragic car accident, Kanako adopted Tooko into their house, making them foster siblings.