Hello fellow degenerates of culture (though you don't have to be to enjoy this game). This game is from an era where the Sakura series was a wee bit less cookie-cutter and bland. I've quite enjoyed the RPG elements, and save for an achievement or two that was a bit grindy, it's a decent game and I recommend it. If you'd rather it be an indecent game, you can of course utilize the nsfw way of things.

This key in particular is from the Steam Sakura Special 4 Bundle from HB.