Souhei always wanted to be a professional boxer. Yet at the age of 25, he is just an idle good-for-nothing who keeps himself from starving by sleeping with older, rich woman. After a traumatic boxing bout in high school that nearly left his opponent dead, he is simply wasting his life away in an attempt to atone for his impulsive behavior in his youth. His rather serious friend and struggling writer, Chika, has watched Souhei for the last ten years. With his help, will Souhei be able to finally achieve his childhood dreams?

An extra story continuing from "Boys & Girls (Otoko no ko, Onna no ko)" one-shot from "Chiisana Glass no Sora". Chika's co-worker and friend, Suzuki Naoki, has his own story in Chiisana Glass no Sora and Mizu Numuru.