He's the dumbest guy in the world, but I love him the most— In their third year of high school, Miyuki and Hikari are childhood friends and inseparable gals. They spend their days having fun and acting silly, but Hikari possesses a special ability: she can see the lifespans of others and can even transfer her own lifespan to them. Miyuki wishes for Hikari not to use her ability, but Hikari's lifespan continues to shorten...