The Cold and Aloof Transfer Student Turns the Master Key and Is Sweet After School

Finally we got to be alone, huh?
An awkward and sweet, under-one-roof love story of two people bad at socializing.
Interaction is unnecessary, always not involved with others—a transfer student arrives to take the seat next to Karasu Kuya, one who has such misanthropy.
Fatima Kurei, although with an attractive face and figure, is thoroughly silent and unsociable. And Kuya should have been fine with it with his usual apathy—if she were not a family member.
They would go out shopping together, cook meals together. She was actually his grandmother’s adopted child, and his semi-cohabitation life with her begins gradually.
However, they can’t go any further—after all, they know of each other’s common point of misanthropy. That said, the feeling of “I like you” is no longer containable.
This is a love story that blossomed under one roof.