A friendless kid and a delinquent discover jazz in 1966 and suddenly the loneliness breaks open. Watching them learn an instrument together, argue about records, chase girls, fail at things that matter, this is what it actually feels like to find your person. The show spends twelve episodes proving that friendship isn't a plot device. It's the entire point.
Kaoru arrives in a quiet seaside town in 1966, transplanted from Tokyo to live with distant relatives while his father works abroad. A straight-A student accustomed to isolation, he's blindsided when Sentaro, the school's most infamous delinquent, decides they're going to be friends. What starts as an unlikely pairing transforms into something deeper when Sentaro introduces him to jazz, and the two discover an electric chemistry playing music together that neither expected to find. The seaside setting pulses with American influence, creating a liminal space where tradition meets rebellion. As Kaoru sheds his careful armor and Sentaro reveals layers beneath his rough exterior, their friendship becomes the emotional core of something larger: a coming-of-age story about finding your voice, literally and figuratively. Other characters orbit their orbit, including Ritsuko, who watches from the periphery with her own complicated feelings, and the charismatic Brother Jun, whose presence looms over their small world. This is a story about the specific magic of summer, first real friendships, and how music can change who you thought you were.