"No romance until you become the best in Japan!" Ichika Amemiya proudly replied when asked by an interviewer for the school newspaper about her relationship with Issei Kamiya. Issei is a promising fighter who is expected to be a champion at the boxing gym where Ichika's uncle is the president. Ichika serves as a support. Although they didn't say it to each other, they knew that they had feelings for each other, both for themselves and the people around them. However, about half a year ago, Ichika was noticed by Reon Wakana, who visited the gym as part of a rehabilitation program. At the gym at night, when they are alone, Ichika is attacked by Wakana. "Okay, if it was known that there was such an incident in the gym, wouldn't his debut match be lost?" " This gym will be crushed with one shot." "What do you do? You can choose," Ichika said to Wakana's threat.