Re:Zero kara Hajimeru Isekai Seikatsu

[KrayZ33]

One thing is really weird about Roswald, he's always going to meetings and other stuff whenever something comes up...

I always thought that someone is forcing these things on him and that someone is probably trying to get Emilia killed. (or to get Subaru going)

He wasn't there when Emilia lost her emblem (not by her side, nor at home at the mansion), he wasn't there when the witchfiends showed up in the forest and he isn't there when the cult is killing everyone.

We already know what he is trying to do, so I doubt they make him a "sin". He might be evil in his own way, but he wants Emilia alive from what we can tell so far.
It's also worth mentioning that he is the only character that somehow didn't do the same thing/or didn't follow the same schedule when Subaru repeats the timeline and I think that is very important (at least I hope it is).