After enslaving Lucien by placing the Will of two demonic wolfs specie and over a dozen gnawers Will in Lucien's sea of consciousness, he moved on to Ymir.
What he did was to infuse more of his mental energy inside Ymir's sea of consciousness so as to strengthen the 'enslavement technique.'
He also placed the Will of a dozen more gnawers and the Will of a demonic bear specie in Ymir's sea of consciousness.
Unlike Lucien, Ymir did not resist and because Ymir's sea of consciousness was already corrupted by his mental energy, it was an easy thing for Simon to infuse more of his mental energy into the Winter Monkey's sea of consciousness.
After Simon finished enslaving the two demons to his satisfaction, he took a step back, withdrew his Chaos Wraps, and released a deep sigh.
'I really need to find a way to increase the regeneration rate of my mental energy.'
He placed his hands on his waist, released another sigh, then he looked at Ymir and Lucien.
