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Momona Koibuchi
Also known as Koibuchi Momona, Renen Momona, 恋渕ももな
Career
Active 2022 – present
Biography
About Momona Koibuchi
Momona Koibuchi is a 27-year-old Japanese AV idol and gravure idol who measures 42-25-36 with a 40O bra size. She stands 5'3" tall and weighs 134 lbs, with an average body type that has been described by some as "the best hourglass body shape ever of any asian model." Her natural black hair and brown eyes are a fixture in her work, which spans adult modeling, gravure, TikTok, and YouTube. She entered the industry in 2022 after leaving a government job as a civil servant, where she reportedly faced sexual harassment because of her noticeable size.
Koibuchi made her gravure debut in February 2022, followed by her AV debut months later, and her hardcore debut in June of that same year. She quickly rose to become one of Japan's most popular AV actresses. Her performances include solo, girl-girl, and boy-girl scenes, with specialities like squirting and gangbang. On May 26, 2025, she released her first lesbian movie, START-299, with Hibiki Ohtsuki, a move that came after she had previously stated she found homosexuality "unnatural" and silly.
As of 2026, her Instagram following stands at 375k, with 367.4k on TikTok and 33.1k on YouTube. She has no tattoos and keeps her personal life largely out of the public eye. She is from Akita, Japan, and began her career at age 23.
Record
Profile details
Personal
- Years Active
- 2022-present (started around 23 years old; 4 years active)
- Birthplace
- Akita, Japan
- Ethnicity
- Asian
Body
- Hair Color
- Black
- Eye Color
- Brown
- Weight
- 134 lbs (or 61 kg)
- Measurements
- 42–25–36 (B–W–H) · WHR 0.69
- Bra/Cup Size
- 40O show conversions - UK: 40KK, EU: 90O, AU: 18O, JP: 90O
- Boobs
- Real/Natural
- Tattoos
- None
Performances
- Solo
- Nudity (Full)
- Masturbation
- Girl/Girl
- Kissing
- Boob Touching
- Boob Licking
- Fingering
- Dildo
- Oral
- Tribadism
- Boy/Girl
- Blowjob
- Vaginal
- Special
- Squirting
- Gangbang
Extra
- Instagram Followers
- 375k (as of March 2026)
Frequently asked
What made Momona Koibuchi leave her civil servant job?
She left after experiencing sexual harassment at work, which she attributed to her large breasts.
When did Momona Koibuchi make her different debuts?
She debuted in gravure in February 2022, in AV a couple months later, and in hardcore in June 2022.
Who was her co-star in her first lesbian movie?
Hibiki Ohtsuki, a 37-year-old actress with extensive lesbian film experience, was chosen as her co-star.
Did you know
- Her first lesbian movie, START-299, was released May 26, 2025, and was billed as her first lesbian experience ever.
- Before becoming an AV idol, she worked as a civil servant in Japan.
- She holds the record for having "the best hourglass body shape ever of any asian model," according to some descriptions.
- Her measurements of 42-25-36 give a waist-to-hip ratio of 0.69.
- She has amassed over 375k Instagram followers, 367.4k TikTok followers, and 33.1k YouTube subscribers as of March 2026.
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