+1 - High Tension Basketball Story!

Nanako Kitashirakawa is 15 years old. She enters the same high school as her late brother. Nanako wants to fulfill her brother's dream of winning the national championship, which he was unable to achieve. Nanako looks for the boys' basketball club to become the manager. However, the basketball club is closed. Hirotsugu Shijo, a member of the team she admired, has changed completely. Nanako is depressed, but when she sees Natsuarashi Wataragi, also a first-year student, running with faith in his own abilities, she decides to create her own boys' basketball club.....?

(google translated)