With Walker out of commission, his entire mind still muddled from the climax earlier, Hunter and Gray moved away from him and allowed the former to cultivate in peace as the both of them stared at Leo with darkness in their eyes.
Leo, suddenly being stared at in such a way, couldn't help but subconsciously shrink backwards. It was at this time that he realized that he must have become the last target of revenge of the father and son pair.
Since Leo had only ingested one round of Yang Energy -- the c*m coming out from Walker earlier on -- there still isn't enough Yang Energy to defeat the artificial spirit within Leo. Although Hunter's body, which Leo is currently occuppying, has much more of a vitality than all the others, it still wouldn't be enough to defeat all the Yin Energy spiralling around his body.