Ryofes! ~Saigo no Nanafushigi~

Set in a boys’ dorm of a college preparatory school in Kansai, there are 8 students and a dorm mother. Seven out of eight students enjoy their high school lives, however one student named Shinnosuke Date closets himself in his room and never hang out with others. One day, a girl, who tells that she is Date’s younger sister, visits him.