"Watari probably can't do anything even if I did ask him. Or anyone else, for that matter. It's...it's just something I have to deal with myself."

Because Hisoka knows that he will only be free of the curse once Muraki is dead. Until then, he has resigned himself to this and accepted it. He could hardly dare to hope or believe that anyone might be able to do anything about it. If Watari could help, surely someone might have dragged him to his co-worker earlier, so he never even considers the idea or option. Hisoka either ignores or doesn't comment on the look passed between the scientist and his partner. He looks down to Tsuzuki's hand on his before turning his gaze back up to meet his partners.