I think the gems are part of his soul and you’re only able to get them once the person is dead because in earlier chapters there was a big gem and the king said it was ml’s mother? Idk I could be wrong tho :<
Plus if you think about it he couldn’t show it either because of the potential repercussions from his actual wife. I mean if you consider how it’s gone this time around compared to the last. She has been in much more danger because he has shown affection for her.
ITS BACK :3