Honshitsu

Honshitsu (本質, literally "Essence") is the current energy system of the Extracteurs. It uses the three other systems known as: Killing Intent, and  to become a single energy system with similar components and abillities.

Overview
Originally Honshitsu was an alternate energy system to match Reiryoku. It used the Killing Intent inside of Reiatsu to help materialize Reiryoku into a destructive form, that was 100% visibile. Hwoever, as time progressed it was modified and mastered to help amplify Reiryoku. It instead used the Killing Intent infused Reiatsu to harden the outside of Reiryoku, and manifest it into a stronger form then it is usually let out.

This entire source of energy is used to power the Extracteurs' abilities. It is also the form of energy used to activate their Tamakuijū's abilities.