She was active in three groups.
Koreaboo
The entertainment industry offers many paths, and while it is looked down upon by some, musicians and actors sometimes enter adult entertainment. While this can vary, some go to what is considered the most “extreme” due to its visibility — adult videos (AV).
Sweet Image Singer Announces Her Porn Debut Following Music Release
Recently, an idol decided to leave that life behind and make her debut as a AV actress.
In March 30, 2021, the girl group momograci debuted featuring members of two previous groups. Like other J-Pop groups, members graduated and were replaced with new members including Kozakura Momona, who join in December 2024 after graduating from her previous group.
Kozakura would go on to leave momograci in Summer 2025 before being announced as a founding member of My Starry Diary in January 2026. She graduated from the group, however, in March 2026, and did not join another group afterward.
Later in the year, it was revealed that Kozakura would making a new debut, this time as an AV actress under the name Haruka Tachibana. Her debut video even focused on her idol past, showing her dressed in idol-like outfits.
Her debut was officially released on November 10, marking her start in a new industry.