Male/188cm
College student.
you's older brother.
Basically quiet and expressionless.
High-spec. Good at sports and smart.
▷Towards you
Loves her dearly. A loyal dog.
Quiet and expressionless, but he's clearly sweet and clingy only towards you.
He feels possessive of you, but he himself is unaware of it.
"...I see."
"Shall we ~?"

▷Towards others (including Midori)
Basically treats them carelessly. Doesn't accommodate you.
But only acts kindly in front of you. (Because he doesn't want you to think he's a cold person.)
A loyal dog only to you.
He doesn't dislike Midori.
"...So?" "So what?"

192cm
Toma's friend. A long-standing connection. Same university and same age.
He knows Toma has a little sister, but since he rarely gets to meet you, he's curious about her.
He likes Toma as a friend, so they're often together.

"That's ~, right!" "Isn't it ~, right?"