Season 2, Episode 8, the finale, sees Arisu and Usagi face the Queen of Hearts (Mira) in a deceptively simple croquet game, which is actually a psychological battle where Mira tries to break Arisu's will by convincing him Borderland is a hallucination from a hospital, nearly succeeding until Usagi proves her reality by cutting her wrist, prompting Arisu to finish the game by playing three rounds, defeating Mira (who is then eliminated), and leading to the survivors choosing to return to the real world, waking up as meteorite survivors, revealing Borderland as purgatory.