In The Summer Hikaru Died, the story revolves around a friendship that appears simple on the surface, but gradually becomes unsettling.
Yoshiki Tsujinaka continues his daily life alongside his best friend, clinging to their shared routine in the village. Hikaru Indo remains by his side, acting as he always has, though there is something about him that no longer entirely belongs to the human world.
Between them, the mundane begins to warp, and what was once a childhood friendship turns into something difficult to name.