The Smallest Boobs of JAV: B Cups Part 2

Rumina Yuki

Mio Ishikawa

Don’t let her sweet face fool you because Mio Ishikawa is one of the biggest actresses in Japanese porn for the 2020s. In the West, big boobs and curves might reign supreme, but the modestly endowed can dominate the game in JAV. Domestic JAV fans absolutely love Mio, who usually charts high on their rankings, as she is just about the picture perfect model for the girl-next-door type and seriously one of the cutest girls to do porn.

NATSUKA

That said, not everyone makes it in porn, which looks to be the case for Natsuka. Understandable when you look at her because she’s a niche within a niche. This tiny little Gyaru is about as flat as can be and not just with her chest. With tomboy short hair, a tight body, and one very dark tan. She seriously had one of the best tans I’ve seen from a Gal. She had spunk to spare but could also take some punishment. There are few who look and act like Natsuka. Shame she didn’t seem to last too long.

Riasu Mizutani

Some people just don’t fit in the same mold as everyone. That was true for Riasu Mizutani. Her debut even chose to advertise her intelligence before anything else. With her column posts, deep thoughts on sexuality, and her translation work, it wasn’t just advertising. She knows her stuff and is opinionated. While that’s good for her, it means little in porn. No surprise that she’s left mainstream JAV for the most part and is working in independent AV. Riasu is a niche cut but worth checking out for the most curious. Plus, she’s got crazy thick nipples relative to her boob size.

Karina Nishida

There aren’t many out there like Karina Nishida. The half-American, half-Japanese hafu has a face like few others. A face that might not seem like it, but is hard into BDSM. This mixed-race cutie likes the rough stuff and bondage in particular. She retired after a solid career only to make a comeback in 2026, and her comeback title was a Bondage film. I, for one, was more of a fan of the few Anal videos she did.

Kana Miyashita

While we are on comebacks, what a re-debut with Kana Miyashita. She’s a returning face who was once a spry 20-something-year-old but has returned as a bona fide MILF. What a transformation. She’s got a tight body, dark skin, and almost no tits. Her performing skills are what caught my eye the most, though. Her return was only for a short time, unfortunately.

Mitsuki Nagisa

Others

We couldn’t fit all the itty-bitty B cups here. There are also names like Wan Horikita and Chiharu Miyazawa. We had the former pop idol turned AV actress Moko Sakura. There was also Yui Tenma who used to be on the B cup team until she enhanced herself. There’s also the hardcore Yukino Matsu who makes you forget about her flat chest with her anal sex and deepthroating love. We also have the infamous Yura Kana and her youthful tits and face. And before Yura there was Shuri Atomi.