I haven't play Hatoful Boyfriend, but...

I found this new VN on Steam while searching for new otome games to play, Angels with Scaly Wings by Radical Phi. It has fairly positive review on Steam, and apparently we can date...dragons?

Screenshot on Steam store

But I'm going to pass on buying this game, because I may get weirded out with the dating-the-dragons concept. Still, if anyone is okay with the settings, feel free to play the game and let me know how it is. Most reviewers on Steam compliment the storyline, so it may be worth your time to play.