an amazing game, but i am confused on a few things. i have yet to see a camera, despite the achievements saying they are apparently around. secondly, Rika doesn't seem to orgasm after masturbating, especially while "assisted" by the player. the arousal bar just drops faster, but she doesn't seem to make any "O face" or heavy breathing, or anything. Also, you might consider adding in some toys as a final touch to the game. really get that extra factor during masturbation sessions. Might be beneficial to add in. i mean, unless those were planned features anyhow. in which case, good on ya, man.
but regardless, love the game. Rika is adorable.