I completely agree, the two of them feel too similar. Don't get me wrong, I like Kurone and I think she has more complexity than Meryl, at least for now. But they scratch the same itch when it comes to reverse ntr, the easy-going gyaru type. Personally, I would love if Chimalab introduced another demon general, so she could be on the same level as Sadi. Maybe a strength obsessed warrior, a muscle mommy that wants to take the third male protagonist by force or something. I feel like Kurone and Meryl are already the cunning type, so a more boisterous and straightforward antagonist would be interesting. I'm also interested in what other people think, what should the third villain be like? Should she be similar to the others and use similar tactics, or be completely different in the way she handles things?