Principal: koi suru watashi wa heroine desu ka?

Sumitomo Shima was unable to live with her mother, feeling uncomfortable with her mother's husband. But shortly after, Shima decides to move to Hokkaido where her father lives. Hokkaido begins a different life in her new high school, where she meets her classmate Tatebayashi Gen and Sakurai Wao and her school principle seems to be 'Gen and Wao for everyone'. There she learns a new and fun life with many friends.