The protagonist Aozora Momoi accidentally traveled to the world of "Kuroko's Basketball" and became the younger brother of Satsuki Momoi, a first-year junior high school student.
After encountering a small accident, Spider-Man's abilities unexpectedly awakened, and his body underwent drastic changes.
Sister Satsuki Momoi noticed changes in her brother's body (a sudden increase in appetite and unusually agile movements), but she thought it was due to puberty.
One day in a street park, Aozora witnessed a group of elementary school students bullying a fierce white-haired child - Aku Tsujin (a senior elementary school student). Aozora saw an injustice on the road and easily defeated the gangster with fighting skills and agility that far exceeded those of his peers.
Akutsu becomes interested in Aozora's strength and speed (non-basketball interest). Aozora saw the dilapidated basketball hoop in the park and suddenly had the idea to invite Akutsu to play a "ball game" (informal basketball). With his super physical fitness and preliminary spider sense, Aozora showed amazing athletic talent and ball sense (despite rough technique).
Aozora was attracted by the instant confrontation and skills of basketball, while Akutsu felt that "this sport is interesting and can release strength." Qingzora began to become interested in basketball, and vaguely felt that his abilities had great potential on the basketball court. He initially invited Akutsu to "play this together in the future."
