RBD-817 - The day my sister became my exclusive toy

Kokona Shirato's expressionless, aggressive vibe isn't bad, but Yuri Oshikawa's mature aura when she's the one in control is just so much more captivating. I think it would have been better if the roles were reversed—instead of the younger sister doing it to the older, it should have been the older sister to the younger.

The play itself isn't that great either. This is a typical production where they rely too much on toys, and that's exactly what happens to the actress.

*Three male actors appear but do not take off their clothes. The scene where Kokona uses a strap-on to fuck Yuuri is worth seeing! However, I was disappointed that Kokona did not take off her panties when putting on the strap-on.