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.
| Sound | Isao Yamada | Original Music Composer |
| Camera | Masahiro Nishikubo | Director of Photography |
| Lighting | Mitsuru Ogawa | Gaffer |
| Sound | Shinji Yamazaki | Sound Recordist |
| Production | Kazumi Kobayashi | Production Designer |
| Writing | Masahiro Kobayashi | Screenplay |
| Production | Dai Miyazaki | Producer |
| Editing | Naoki Kaneko | Editor |
| Directing | Toshiki Sato | Director |
| Production | Hidehiro Ito | Executive Producer |
| Production | Yasushi Satô | Producer |
