Hollow Nori

"Hey Nori, you hate them right? Those who teased you, belittled you & brought you down! Don't you wanna see their blood on your hands? - Hollow Nori speaking to Nori

Hollow Nori (ホロー のり Horō Nori) or more particularly The Hollow inside Nori's conscience (ノリの良心内部の中空 Nori no ryōshin naibu no horō) is a strong & ruthless energy that manifested due to Nori's pent up hatred & constant exposure to Hollow reiatsu.