He has had a crush on the girl next door who is 10 years older than him since he was a child, but no matter how much time passes, he is unable to escape the frame of "a younger brother who is like family to me". He was about to give up because she never saw him as a love interest... but then a rival in love appears and his passion is ignited, and he makes up his mind and begins to approach her aggressively! After 10 years, his unrequited love finally starts to move! (Source: Japanese = TV Asahi || Translation = MyDramaList) ~~ Adapted from the manga series "Musashino Rondo" (ムサシノ輪舞曲) by Kawachi Haruka (河内遙).