Board Thread:General Discussion/@comment-27806078-20160319212000/@comment-28017625-20160320185843

Grimmjow uses a new type of reiatsu (Hollow reiatsu) after being healed by Uruhara, thus he can impale Askin's chest because Askin hasn't developed the immunity to his new reiatsu.

Also, he also mentioned that he has his own style to kill people. Deal with it.