While this game definitely wouldn't be my favorite when it comes to the actual romance or the romancable characters, it makes it into my top 5 NSFW VNS because of the story, lore and especially the humor.
This is not to say that the actual dynamic between the MC and the romancable characters, or the characters themselves, are "bad", they're still better and more well-written than the majority of VNs. I just want to give credit where its due, and that's the comedy and the intriguing plotline.