You have never believed that solving plain (at least at the very beginning) mathematical activities will be the titillating thing to do? Then you haven't played games from"Hentai Math" series! And by the way this is already sixth edition which means that there are a lot of guys who love this stuff so why don't you attempt it also? The task is plain - put together a couple of numebrs and type in the response. If the response is correct then you get on the next level and unlock one more awesome anime porn artwork from in-game gallery! But be carefull - time for each round is limited and if it will run out then you will be transmitted on the previous level (and this always will happen if you will give the incorrect reaction clearly). Once you will finish all the levels you will get access where you can love all unlocked pictures sans any rush.