Ⓒ︎Ⓗ︎Ⓐ︎Ⓟ︎Ⓣ︎Ⓔ︎Ⓡ︎ 1: Who is he..?

Muichiro Tokito is a student who is the sunshine of his class. Though he speaks less, his smile is what all his classmates love. On the other hand, his twin, Yuichiro, is kind of a person no one would want to mess with. He is a cold and aggressive person, who has his soft side only for his brother. Muichiro however for the first time falls in love with his best friend's older brother, who is his senior. Will he be able to confess his feelings towards his senior?