[DeepL Translation - needs review] Volume 1: A serious boy + a beautiful girl + tennis = a hot-blooded sporty competition! --A-chan, who is a meticulous and serious boy, is a little bit lax. But when he meets a beautiful girl named "Natsu," who is serious and passionate about tennis, he falls under the spell of tennis and his life changes drastically! A spiral of pleasure and fainting in agony. ...... The chemical changes in his life, which cannot be expressed by mathematical equations, have...
