I think the plot will probably go like this. There is no way that mc who even doubt yurian she has feelings for won't doubt that nephrim. That guy will probably lose his memory. And our girl might think that instead of killing him, she will go like I can fix him since he lose his memory. But it wasn't because instead of forgetting or losing, he probably sealed his own memories only to reawaken and act his plot.
I think the plot will probably go like this. There is no way that mc who even doubt yurian she has feelings for won't doubt that nephrim. That guy will probably lose his memory. And our girl might think that instead of killing him, she will go like I can fix him since he lose his memory. But it wasn't because instead of forgetting or losing, he probably sealed his own memories only to reawaken and act his plot.