Update 5/28/2014: Monster Monpiece is finally out in North America (Europe gets it next week), and the sentiment in this Japanese preview still holds: It's a great game, but damn that embarrassing girl-stroking mechanic.
Card-based PS Vita game Monster Monpiece features monster girls and inappropriate gameplay. In Japan, the game appears to be a monster hit. I cannot understand why!
It's called Monster Monpiece, and it's a card-based game. That's fine and all until you realize that it's from Compile Heart, the folks behind Hyperdimension Neptunia. Oh, and that you have to stroke your PS Vita to play it.