Noche - Name given by Misuzu, he didn’t had a name before, the king of demons, the only entity the world relies on next to god, who is driven to madness every few centuries, can only be calmed by ‘the fated one’, when turns the demon king totally insane, he dies! Without one the world can’t survive, next demon lord is born(?) something like that!
Kanzaki Misuzu- introduced herself as Reene in this dimension, the given name holds a lot of power, so hiding her real name sure helped her out a lot! She became “the black healer” because of her awesome isekai powers! She’s the current demon king’s (noche’s) “fated one”
Without her he will be driven to madness, making a mess of him, but with her by his side, his lifespan will increase considerably & vice versa, her life will be long due to partnership with him, so she had a dilemma when presented with his offer, she just wanted to go back, but Gaia , the god told her she will go back to her own world when she dies in this one.
because she’s so important to him, and trouble always chases after her, Noche appointed a bodyguard to Misuzu, “Voila” the previous demon king’s daughter and the little sister of 2 of his advisors/ (there was some other term for it, I forgot). How ironic as she was the one that got her into more trouble!
This Voila wanted to be demon king’s wife/mistress she was not only jealous of Misuzu, a mere human(in her eyes), she was making her beloved demon king court her, Follow her around, do her bidding, for Viola this was ‘the heights of impertinence’! Voila was always treated as a VIP and doted upon as she’s the youngest daughter of previous demon king, so she took it for granted and thought she could do anything and nothing will happen to her. Also she totally underestimated what Misuzu meant to Noche! And Dun dun dun the most predictable ending as you read!