While running late to attend a party, Shinya Nakamura dies in a motorcycle accident, but revives and learned he is an Ajin.

Four humorous short stories from the points of view of Sato and Tanaka (2 stories), Izumi and Tosaki (1 story), and Ko and Kei (1 story).

Taking place immediately after the prologue scene from Episode 1, Satou's background is explored.