A free program for Android, by NTT Solmare Corp..

Obey Me: Nightbringer is an otome game from Obey Me! where you will play as a human girl in the underworld who will make the main character of the story a strange, terrifying demon.

Why is this game so scary? Because it is based in the underworld, where there are many monsters, demons, and devils. This girl will become a monster herself and will be forced to live in the underworld with her monster brothers. And the best part is that this is an otome game, which means that you will have to play with your choices in order to survive.