I saw akaza uses the same technique that he killed rengoku with to later kill himself with when against tanjiro. Webakaza is one of the strongest demons. To become an upper rank, you need to have a strong desire for something in life. For akaza, this was the need to become strong. Punching rapidly at the target, akaza creates a barrage of large shockwaves, destroying anything in front of him. Webshockwave demon art, also known as, destructive death, is one of three blood demon arts that added in update 1. This blood demon art combines both martial arts and. Webakaza’s most powerful blood demon art technique is compass needle, in which he forms a light blue snowflake marked with numbers from one to twelve. Websome of akaza's most notable blood demon art techniques include: Akaza can punch the air in front of him and create powerful shockwaves that fly toward his target,. Air type (破 (は) 壞 (かい) 殺 (さつ) ・虚 (くう) 式 (しき) , hakai satsu: Kūshiki?) is a technique derived from the destructive death fighting style created by.