The Guard from Underground and Door (and presumably Typhoon Club as well; I'm waiting for the Cinema Guild release) have liner notes from Jasper Sharp giving a brief history of the Director's Company. The concluding passage states:
Jasper Sharp wrote:Since its collapse, many of the Director's Company's productions had remained in a rights limbo and the whereabouts of their original elements unknown, but in 2021 an ex-producer of the Director's Company named Takashi Ikoma discovered a large amount of long-lost negatives of Director's Company films, cleared the rights, remastered them and made them available for us all to watch today in high definition.
No indication of which films those might be, but here is a (complete?) list of titles that emerged from the company included in the notes:
Wolf: Running is Sex (Banmei Takahashi, 1982)
Farewell Love: Rock is Sex (Ryudo Uzaki, 1982)
Harlem Valentine Day: Blood is Sex (Shigeru Izumiya, 1982)
Kandagawa Pervert Wars (Kiyoshi Kurosawa, 1983)
Mermaid's Legend (Toshiharu Ikeda, 1984)
Crazy Family (Sogo Ishii, 1984)
Love Hotel (Shinji Somai, 1985)
Typhoon Club (Shinji Somai, 1985)
Bumpkin Soup (Kiyoshi Kurosawa, 1985) (
Sharp uses the The Excitement of the Do-Re-Mi-Fa Girl title in his notes)
Scent of a Spell (Toshiharu Ikeda, 1985)
Inujini Seshi Mono (Kazuyuki Izutsu, 1986)
Halber Mensch (Sogo Ishii, 1986)
House of Wedlock (Kichitaro Negishi, 1986)
Luminous Woman (Shinji Somai, 1987)
Half of Eternity (Kichitaro Negishi, 1987)
Door (Banmei Takahashi, 1988)
Evil Dead Trap (Toshiharu Ikeda, 1988)
Yojo no jidai (Shunichi Nagasaki, 1988)
Dangerous Stories (Kazuyuki Izutsu, Banmei Takahashi, Kiyoshi Kurosawa, 1989)
Tokyo Heaven (Shinji Somai, 1990)
Maria's Stomach (Hideyuki Hirayama, 1990)
Popcorn Love (Hironari Yano & Takeo Moriyasu, 1990)
Mo no Shigoto (Takumi Kimizuka, 1991)
Manatsu no Chikyu (Osamu Murakami, 1991)
Kaze, Slow Down (Shinsuke Shimada, 1991)
Misty(Toshiharu Ikeda, 1991)
Travels in the Orient (Kazuyuki Izutsu, 1992)
The Guard From Underground (Kiyoshi Kurosawa, 1992)