Kimi no Hana ni Naru

Nakamachi Asuka is 30 years old and single. She achieved her dream of working as a teacher by teaching at a high school. Due to a case, she is unable to continue her teaching position. She suddenly begins work at a dormitory where 7 members of an unpopular boy group live. Her job is to do pretty much everything for the group, including cooking and cleaning. There, Nakamachi Asuka also meets her former student Sagami Dan. He is now the leader of the boy band. Even though the boy band hasn't found any success, Sagami Dan is devoted to the group and his role as the group's leader. While watching him, Nakamachi Asuka regains the passion she had as a teacher, and she faces the frustration she holds.
(Source: AsianWiki)