Soran was not the reckless type to overstep his bounds, but when he heard Vivian's protesting shouts, he was concerned about her state of well-being.
While he knew that intervening in a Lycan Alpha's affairs would inevitably result in his death, he was no spineless coward to abandon a damsel in distress.
Thus, bearing great risks ahead, he trailed after Ronan and Vivian through the forest. He was cautious to maintain a safe distance, casting a cloaking spell to blanket over his scent in case Ronan caught a whiff of him in the air.
When he witnessed the beastly shift from man to Lycan, Soran's hair stood on end. He swallowed the tight ball of uneasiness in the back of his throat, camouflaging himself amongst the shrubs and bushes by the treeline at the edge of the forest where the lake was.