No spoiler, some thoughts of mine. After watching the last trailer, it looks like it didn't cross SRQ's mind that LR and PWX also returned from the previous life. So, he is waiting for them to have problems in their marriage so he can get between them. If he realizes that they also returned and, contrary, they drew closer and fell in love with each other this time, and they suspect him of his intrigues from the previous life, I think he will show his real face, even to LR, and take revenge.
After watching the last trailer, it looks like it didn't cross SRQ's mind that LR and PWX also returned from the previous life. So, he is waiting for them to have problems in their marriage so he can get between them. If he realizes that they also returned and, contrary, they drew closer and fell in love with each other this time, and they suspect him of his intrigues from the previous life, I think he will show his real face, even to LR, and take revenge.