Yukihiko Kurebe
About
Yukihiko is the younger brother of Tooru's mother, and 13 years older than Tooru. Though he acted distant towards Tooru when he first arrived at their house, the two eventually got closer after the death of Yukihiko's father. After Yukihiko realizes that Tooru has romantic feelings towards him, he begins wondering whether he feels the same as well.
In middle school, Yukihiko developed romantic feelings towards his father, though he never confessed them or acted upon them.