I can't read Japanese. The hooking software with ITH + Translation Aggregator combination works well enough to make the game fairly understandable.there is 3 or 4 static sex sprite.. but in general, all the sex scene are text only with a black background.
if u can't read moonrunes u will probably not enjoy the game.
Also, there's closer to 8-10 events using sprite sex. You just have to know where to look.