Haruna, a determined employee at Aucent Homes, excels in sales due to her tenacity. She's reassigned to the PR department led by Okuzawa Toko, known for being respected but feared. Participating in an event, Haruna realizes her company's role in promoting environmental goals beyond home building. A heavy rain triggers her childhood trauma of losing her home to a landslide. At an event, she learns about the importance of proper forest management to prevent disasters. She conceives the idea of recycled wooden straws, facing opposition internally, particularly from Toko. Despite challenges, Haruna persists driven by her desire to prevent others' suffering. The story unfolds as she navigates obstacles to make wooden straws a reality.

Shota Kadomatsu, a first-year high school student who transferred to a private Takehana Boys' High School surrounded by four girls' high schools just because he wanted to have a girlfriend. However, the class he entered was a group of problem children, Class 1 G, who were isolated from the school building and feared by the teachers. Shota is surprised by the dilapidated classroom and his classmates with strong quirks, but he spends his days happily in love and friendship. However, the evil organization Tennokai, which was supposed to have been crushed by the urban legend of the delinquent group G-Men after a deadly battle, was closing in on them.