"Don’t give up without trying, accept the challenge!" Unmotivated high school student Noda Kouta decides to abide by his father’s teachings and tackle the things in front of him. He accepts the confession of Kasamura Sou from the soccer club. Although he is surprised by the confession made by someone of the same sex, he likes spending time with the gentle Sou. He boldly accepts kissing and sex, but…!? “やってもみずに諦めるな。まず挑め！” 消極的な高校生の野田航太は、父の教えに従い、目前のことに挑むことにした。 サッカー部の笠村聡からの告白に頷いたのだ。 同性とのお付き合いに初めは戸惑った航太だが、優しい聡と過ごすのは心地よかった。 そうしてキスやえっちなことにも果敢に挑んでいくが――!?