Writer's Note:
Nightmare has decided overall that he will tolerate Luis' presence when Myu is with or around him. However, his mentality has sunken into the state of a mild sadness due to all the happily families rising up. Perhaps this is another form of Judgment to Nightmare? Or perhaps he is giving up the hopes of ever truly finding peace.
The Red Devil - Beliar
That is how Nightmare sees Beliar in his mind thanks to the BZD's Rebirthing of him. Plus it's such a snazzy title me thinks
I hope you do not mind Lex. Nightmare is, as I have said not a very pleasant beast however I hope this expresses what I want to get across in a way. He will tolerate Luis, so long as Myu is around and likely will grow to tolerate him more as time goes by. But this is still a terrible thing for the three. I dunno, it's almost 5am and I typed this for 45 minutes... yeaaaaaaah... I need sleep....
Nightmare himself talks in an almost riddle like pattern, though you can tell what he is speaking about his subjects tend to change very quickly. As is seen with this story. I'm sorry if it is confusing to some, but it's how Nightmare is now. His mind is new due to his Rebirth and how he is currently acting. But, as I've said... this is him saying that yes, he will accept Luis around him while in the presence of Myu. But it will still take some time before he allows Luis around without her.