Don't know. We just knew both universe are related in the last chapter of Charlotte. Yet, Black Haze came years before manhwa Charlotte was published. So, there is no character from Charlotte is ever mentioned in this manhwa.
Since a few people mentioned that there could be some changes in the remake, I have a feeling we will see some Charlotte charas make an appearance in this one. I haven't finished reading Charlotte so I dunno what happened to her disciplines and if the Charlotte herself still got her og power or not but if she did, she and the others could possibly make an appearance for the last arc of the BH old version (or maybe in some other point where problems arise—they were too chaotic to be ignored); the two story were in the same timeline and I believe in same country too.
Or I wish, I guess. That would be kinda neat if it were to happen tho :D
May I ask the character named Tessi have the same face and aura as Duke Jeffrey Louister. Are they related? Wanna know cuz it was said that this manhwa and charlotte are of the same universe.