Wataru and his younger brother grew up practicing gymnastics, following in their parents' footsteps. Initially, Wataru, as the older brother, was the more skilled of the two. However, a significant talent gap soon became apparent, leading to his younger brother's nomination to represent Japan in the Olympics. Meanwhile, Wataru finds himself adrift, without a clear purpose. Seeking an outlet for stress, he begins attending a kickboxing gym. Through his interactions with fellow gym members and rivals, Wataru starts to realize that in kickboxing, dedication and effort can overcome natural talent.
