Board Thread:Questions and Answers/@comment-3117428-20160718114710/@comment-26871105-20160805123056

There is a reason to why Togashi convenient forgot Hisoka throughout the duration of NGL and Chimera Ant arc, and we all know why.

Because Hisoka would interfere between Gon and Pitou to pick a fight with the former and get instantly killed because of it, which obviously, Togashi doesn't want that to happen.