In an all boys high school, a class is preparing for an upcoming chorus festival. As the boys sing, Hikaru Kusakabe notices that one of his classmates, Rihito Sajou, is not making any noise. Kusakabe is a sleepy-eyed, carefree slacker who plays guitar in a band, Sajou is a straight-laced and serious honor student who got perfect scores on every subject on his entrance exam. Kusabake concludes that the two come from completely different worlds, so there's no reason the two would have any reason to talk, and as such, he'll never know why Sajou doesn't sing.
But by a twist of fate, Kusakabe and Sajou have a strange, quiet encounter alone in their empty classroom, and on the spur of the moment, Kusakabe offers to teach Sajou the song. In that moment, everything changes.
Doukyusei ("Classmates") is a two volume manga by Asumiko Nakamura with several sequels. In 2016, the first volume was adapted in an animated film produced by A-1 Pictures and directed by Shoko Nakamura.
- Deadpan Snarker: Sajou has shades of this.Kusakabe, after trying to run out under a rainstorm: I got wet!!!Sajou, applauding: Oh, well done.
- One Steve Limit: Averted on a meta level, in that Asumiko Nakamura is the original mangaka, Shoko Nakamura directed the anime adaption, and Chieko Nakamura was the art director. None of these women are related.
- Opposites Attract: Basically the premise.
- Shout-Out: The name and logo of Kusakabe's band, Z'GOK, is a reference to Mobile Suit Gundam.
- Theme Naming: "Hikaru" and "Rihito" ("licht") both mean "light" in Japanese and German, respectively.