One day, when Kohei was preparing to eat a lunch alone as usual, Taichi Sagawa (Toranosuke Kobayashi) who was in the same grade suddenly appeared.Kohei wordlessly handed his bento to Taichi, who had just been fired, and left.
Later, Taichi learned that Kohei's ears were not able to hear clearly, so as a quick thank you, he voluntarily signed up to join a volunteer club that delivers lectures to hearing-impaired students in real time...