The long-awaited 4K series from the Irodo label has arrived! I actually watched this work featuring Takasugi Mari's blissful 10 ejaculations, and it's a must-see masterpiece for fans. First off, the video quality has improved dramatically, with skin texture and lighting so clear it feels like she's right in front of you, a stark contrast to earlier works. The natural makeup perfectly suits the little sister role, highlighting her cuteness. In terms of acting, the seamless transition from shyness to passion is superb, especially the scene where she proactively asks, "You can still do it, right?" The ejaculation scenes—JOI, mutual masturbation, handjob, oral ejaculation, 69, missionary creampie, cowgirl creampie, facing seated creampie, doggy style creampie, and missionary creampie while making eye contact—offer variety without monotony. During finger fellatio, the glossy lipstick under the lighting enhances her charm. However, the hair is too neat for a home setting, and the ejaculation effects seem a bit fake, but overall quality is high with flawless lighting and smooth video. The facing seated position being too close or the doggy style being lengthy is a minor drawback, but fans will be satisfied. As an older VR title with clear visuals, it's worth buying without regrets.