For better or worse, it is in people's memories. Is the "someone" in your memory really real? Have you ever imagined how that "someone" really lived? This is a love story in which students question the existence of people by borrowing the figure of the Slit-Mouthed Woman, an urban legend created by people's memories, ideals, and fears.

Aiming to become comedians, Sahara and his comedy partner Setoguchi work together on their act, "Ultrasweet Sourpork", until unfortunate circumstances lead to their disbandment. Hindered by roadblocks on the path to success, Sahara suddenly encounters an "ideal" version of himself—an ultra-famous comedian. Boasting rich knowledge for success as a comedian, this "ideal" Sahara begins meddling with the real Sahara's life.