After actually watching [Step-sister's Plump Butt with 10+ Back Shots!], it's truly a work that makes fetishists drool. The change in Rikka-chan's expression from scornful to sweet, and the development where the male actor is bound to explode due to her unconscious seduction, is so exciting that it's hard to contain. From chapter 1, it's full of highlights, with great pacing, visuals, and acting! The SEX scenes while still wearing the uniform, bloomers, and navy socks retain the and the sense of being a little sister, with detailed performances that hit the mark. The scenes with the red checkered skirt and T-back butt were particularly exciting. In the back-shot creampie scene, Rikka-chan's line, "Big brother, you like my butt, don't you?" was incredibly pleasing. The combination of Ono Rikka, who played the step-sister, and Nanao Jin, who played the brother, was excellent, allowing for the enjoyment of intense eroticism. However, some opinions point out the male actor's one-sided interaction as a concern, looking forward to future works.