Masaki Takatō, the second youngest of four sons, possesses a natural hot temper. This fuels clashes with his strict father, contributes to his expulsion from school, and forces his transfer to another institution. His new school offers limited resources for basketball, the sport where he demonstrates notable talent. A chance encounter with Kanako Yūki, a student repeating two years due to a heart condition, becomes a turning point. An inexplicable bond forms between them. This relationship ignites transformation within Masaki, drawing them together and shaping his development.