Original is Dra Koi hgame, it's a short novel hentai game. The company that produced it is Nitro+. The game is part of their fandisc, it's not an independent game, so if you look at their catalogue for the game, it won't exist. They only have released one fandisc to this date. So you'll know which one to download. It's a nice game, THERE IS NO ENGLISH.