Losing both his job and family at the age of 45, Hideo ends up working at an eccentric company named "The Time Capsule Corporation". Its business revolves around taking in letters written to one's future self and delivering them several years or decades later.
Hideo was assigned to the "Especially Challenging Deliveries Handling Department", in which he is tasked with going in person to directly deliver letters to people who, due to various circumstances, have otherwise become impossible to rea...
