On her first day of high school, Midori accidentally drops her wallet and new classmate Ichijo comes to her rescue. Grateful for his help, she wants to express her thanks, but Ichijo and his two friends seem to always be absent from class. According to rumors, they were all expelled for causing trouble, and Midori, who is usually a diligent student, is now in danger of being expelled as well. To support her family, she has a part-time job, which violates school rules. When the school board chairman catches her leaving work, he offers to let it slide on one condition: she must convince the three boys to return to school. It shouldn't be too hard, right?

This is the physical copy of the Their Unsweet Daily Lives manhwa.