Player Master HE took a deep breath before he massaged his forehead and felt numb. That pain took him by surprise along with his confusion, that is why he kept being under the influence of pain multiple times in that short time.
He doesn't want to be under its influence while playing- especially if he was currently doing the missions. His success rate will fall dramatically and he doesn't want anyone to see such a disgraceful event happening to him.
When he regained his composure, he stood up and dusted off his clothes, before changing it back to his iconic white long robe and the veil over his head. He walked back to the entrance of the Lake of Mirrors and summoned his twin daggers from his item box before he walked straight to the fog. He doesn't care about the lingering players and their stares that burn holes on his back. He needs to focus on his secret mission to get that rewards.