This manga serves as the prequel for [Days](https://mangadex.org/title/60bc2ae0-d683-4220-835b-fbbba344bbc8/days). Shuuji Narukami, a boy with asthma, dreams of playing for the Sakuragi High's Soccer Club created by his father, Ryuu. The day before the entrance ceremony, Shuuji met Kaoru Indou, a soccer genius from Hokkaido.