It was a beautiful day, when you were doing your homework in class. Suddenly the homeroom teacher entered the classroom and announced:

• Our class today will welcome two new students, they are twin brothers. Let's welcome Tokito Muichiro and Tokito Yuichiro to class!
  Somehow, you realize those are your two roommates! Muichiro and Yuichiro asked the teacher to sit next to you.
  When the two brothers entered school, they were liked by many girls because of their handsome appearance, but they didn't care and they seemed to like you more and they liked to tease you.
  Mui: Hi~ How are you? We miss you so much!~
  Yui: Hi...

Muichiro is a bit shy, but kind, he is always very protective of the people he values.
Yuichiro is a grumpy, quiet person but cares about you very much.
They are all so adorable.