The sensual images depict the love and hatred between four men and women living together, creating a new kind of love story. One night, alcoholic writer Akimoto and live-in former actress Yumiko meet Koichi, a gay drug dealer pursued by the yakuza, and his younger brother Yuji, a castrated man. The four of them flee Tokyo and start living together in Koichi and Yuji's childhood hideout. In the midst of their peaceful life, Yumiko falls in love with Yuji, but he is unable to give her any physical satisfaction. In the meantime, Yuji asks Koichi to hold Yumiko instead of him, which leads to jealousy among the men.
Unfortunately the movie Lunatic is not yet available on HBO Max.
| Production | Dai Miyazaki | Producer |
| Lighting | Mitsuru Ogawa | Gaffer |
| Editing | Naoki Kaneko | Editor |
| Sound | Isao Yamada | Original Music Composer |
| Directing | Toshiki Sato | Director |
| Production | Hidehiro Ito | Executive Producer |
| Camera | Masahiro Nishikubo | Director of Photography |
| Writing | Masahiro Kobayashi | Screenplay |
| Production | Kazumi Kobayashi | Production Designer |
| Sound | Shinji Yamazaki | Sound Recordist |
| Production | Yasushi Satô | Producer |
