START-448 - A plain-looking office worker with glasses is sullen and sexually obsessive. After a playful one-time encounter, she transformed and repeatedly caused her partner to ejaculate using techniques she had accumulated from erotic manga. Hoshino Riko.

Hoshino Riko: Her figure is incredible! Those slender breasts are amazing. She even pulls off the nerdy glasses. That gap moe is insane. The way she diligently studies and practices the techniques she learned from erotica is a fresh approach. It really feels like a new genre – the stoic, obsessed girl.

There are a lot of similar stories out there, but Hoshino Riko's charm really shines through. It's a genuinely enjoyable piece. It's fun watching Riko, the otaku, put all her knowledge to use. The busy senior just goes along with it. She seems tired, or maybe Riko just takes the lead and doesn't let go. From practicing solo to deep penetration, it's a long scene, but she keeps experimenting with techniques and even ditches the glasses to become even more beautiful. I'd love to see someone like Koizumi Momona, a natural otaku, just be themselves in a scene like this.

She seems reserved, but her head is full of knowledge from erotica, and she just *has* to try things because 'it was written that way.' It's like the role of the secretly horny girl was made for Riko! Seriously, the M-ish S and reverse NTR stuff really suits her, it's amazing. I think that's probably what she's like as a person. Even with the acting, she just slips into the role so easily. It started with the famous oral and cowgirl position, and then it just kept going... I can always rely on Riko's sweet and loving scenes. This time she's a full-on obsessed girl, but it's great. She was so cute!