The central twist of "Love Exposure" is the manipulation orchestrated by Aya Koike and the Zero Church. Aya's obsession with Yu drives her to systematically dismantle his family and his budding relationship with Yoko. She successfully impersonates Miss Scorpion to gain Yoko's trust and then engineers the indoctrination of both Tetsu and Kaori into the cult. This leads to Yoko also being brainwashed, where she is conditioned to reject Yu and recite religious texts mechanically. The hidden meaning is that the Zero Church's methods—offering a sense of belonging and simple answers—are a dark mirror of the comfort people seek in mainstream religion, but taken to a terrifying extreme.
Yu's climactic attempts to save Yoko involve kidnapping her and trying to deprogram her. The film's most intense sequence occurs inside the Zero Church headquarters, where Yu confronts Aya. In a moment of tragic realization that Yu's love for Yoko is genuine and unbreakable, Aya commits suicide with a sword, finally ending her campaign of psychological warfare. Following this trauma, Yu develops amnesia and is committed to a mental hospital, believing he truly is Miss Scorpion. The film's ending sees Yoko visit him; her declaration of love finally breaks through his amnesia. He dramatically escapes and smashes the window of the car taking her away, and they join hands. This final act reveals that their love is the only anchor to reality either of them has left, a force powerful enough to overcome systematic brainwashing and profound psychological trauma.