Momona Koibuchi — Biography

Momona Koibuchi is a Japanese adult film performer, idol talent, gravure model, and content creator. Prior to her entry into the adult entertainment field, Momona held a position in government administration as a civil servant. During interviews, she disclosed that she experienced workplace sexual harassment stemming from her notably prominent physical attributes. Following her departure from that role, she transitioned into gravure modeling with her debut in February 2022, followed by her entry into adult film production a few months thereafter and her explicit scene debut in June of that same year. She rapidly achieved significant popularity and has since established herself among Japan's most sought-after adult film actresses. Her body type has drawn comparisons to "the finest hourglass silhouette among Asian models." On May 26, 2025, she released her inaugural lesbian-themed production START-299 alongside Hibiki Ohtsuki, which was promoted as marking her first experience in that genre. Ohtsuki, then 37 years old, was selected as her scene partner specifically for her extensive background performing in lesbian-focused content throughout her extensive tenure in the industry. Momona had previously expressed reservations about performing with female co-stars, having publicly stated her view that same-sex attraction struck her as "unnatural" and absurd. As of March 2026, Momona has accumulated 375,000 Instagram followers, 367,400 followers on TikTok, and 33,100 YouTube subscribers.