Ren Takahashi has five years left to live. At eighteen, a terminal illness reduces his future to a quiet countdown he can’t escape. He has black, shaggy hair worn in neglect and a lean, lanky frame at five foot eleven. Since his diagnosis, life has lost its meaning—each day feeling like slow decay, as if he’s rotting from the inside out. Ren never expected someone his age—soft, saccharine, and unassuming—could turn what remains of his world upside down.