RKI-720: Decrypted! Who is the Textbook-Perfect Figure Hiding Inside the Rabbit Costume?

Have you seen this work?

This is the upcoming release from the studio Rookie, set to debut on August 12th, titled “The Inside of the Costume is Surprisingly a Voluptuous Big-Breasted Beauty!? A Busty Older Sister Driven Wild by Heat from Clothing and Customer Harassment, Leading to Sweaty, Sensual Max-Pleasure Sex.” Simply put, the woman dressed as a rabbit costume in the amusement park is an incredibly hot CK model with an insatiable sexual appetite. She was easily hooked by the handsome male actor “Mukai Rirai,” and they went at it passionately…

From the cover, you can tell how amazing the actress’s figure is—big breasts, a slim waist, and CK underwear that’s absolutely lethal. However, the cover also tells us that the studio has no intention of revealing her identity, or rather, they want us to guess who she is.

So, who is she?

This time, the order of the article needs to be slightly adjusted. Normally, we start with the stills and then look at the actress’s appearance in the video. But since the promotional video doesn’t show the actress’s face at all, we’ll watch the video first and then look at the stills—her body is truly stunning. Her breasts are large and soft, her waist is perfect, her lower body is neatly groomed, and her buttocks have a first-class curve. Whether viewed from the front or the back, she’s flawless.

After looking at the stills, I know who she is—she’s the recently powerful yet low-profile release queen, the worker-themed actress who debuted with the studio E-Body, “Sayama Yui.” The reason I say she’s low-profile is that, to this day, there’s no social media account to follow her. We only know she’s an actress represented by the agency LIGHT. But no one would disagree that she’s a queen, given her astonishing number of releases:

Given the sheer volume of her releases, it’s safe to say she’s not a hit-and-run AV flash in the pan (it’s been nine months since her debut in October last year). Judging by the number of her scheduled releases in August, she’s still at her peak. Based on LIGHT’s approach to managing actresses, if Sayama Yui is willing to continue and doesn’t mind, perhaps this actress, initially set up as a worker, will soon appear on social media.

Stay tuned.

Title: The Inside of the Costume is Surprisingly a Voluptuous Big-Breasted Beauty!? A Busty Older Sister Driven Wild by Heat from Clothing and Customer Harassment, Leading to Sweaty, Sensual Max-Pleasure Sex
Product Number: RKI-720
Release Date: 2025/08/12
Actress Name: Sayama Yui
Agency: LIGHT
Height/Cup Size: 165 cm / G-cup