4 stars instead of 5 because the H is bland and poorly drawn.
4 stars instead of 0 because the gameplay has some of the most interesting mechanics of any RPGM game I've played.
One nice thing is that virginity has value in this game and can be traded to bypass certain obstacles, including an entire dungeon.
Because of this, limiting clothing damage becomes very important. It is quite easy to get raped in battle if the MC is completely naked, and many monsters damage clothing. Repairing clothes is done through items (read: money,) skills that cost TP (points gained by giving and taking damage, among other things,) or sleeping overnight at an inn. Monsters respawn, so levels aren't easily cheesed by repeatedly sleeping--well, they can be since it's easy to run around mobs, but that would be highly boring to do.
Orgasms can happen in battle too, and leave the character helpless for an indeterminate number of turns, while clothing is ripped away and the character is on the ground (very high rape potential.) You can lose a battle by orgasming during one, so managing the MC's lust is important.
To counterbalance the above, it is easy to raise MP and HP during battle. Battles themselves are mostly easy to win, only complicated by the potential need to keep the MC a virgin.
While maintaining chastity may be important, preserving innocence is not. A Perversion stat can be raised to unlock certain things like quests, earning large-ish amounts of money or discounts on various things. So far my character hasn't turned into a mindless, semen guzzling slut, but it is a Kagura game so...
The last thing is weapon specialization. Some skills only apply to a particular weapon type (1H sword, spear, axe, 2H sword, wand and whip) and the price of weapons and skills more or less forces you to pursue one, or perhaps two weapon types for most of the game.
Overall, while it's not a LOT different from any other RPGM game, the mechanics in this one make for a different experience than most. The grind is minimal as well which is a huge positive.