Well... at least this one has pretty art. You'll get a long time to look at it, and this game is very text heavy and there's not a lot of decisions to make. You're the titular Jack, a detective, in a sci-fi world that conveniently contains a lot of anime girls you're going to bang. There's more to the story than that, as MobyGames' review details
but even if you read Japanese, it's unlikely to be enrapturing.