The Shape of a Couple: Spied on by My Husband (2019)

Director Taniguchi Kohei's pink film debut won praise for his erotic depiction of a couple in a unique form of love. Ai (Kirishima), a virgin, interviews an AV director nicknamed "the cuckold" by his editor, while talking to his ex-wife Kaori (Yokoyama) and an-ex porn actress named Miki (Nagase) who was involved in their breakup.