Dominate The Night With Akaza's Blood Demon Arts: Unleash The Fury Of The Compass Needle - db01
You can know how it works from the manga.
Akaza's compass needle technique grants him awareness of opponents'.
Webapplied fighting spirit sensing is a bda for akaza.
Webboth are his blood demon techniques called hakai satsu or destructive death, though yes the compass needle is the secret behind akaza, and it the most powerful defense weapon he has.
Webjust simply roll a blood demon art in the old man, he has a chance to give you it depending if your lucky or not.
Webakaza's blood demon art, destructive death, merges shockwaves with martial arts, making him a deadly combatant.
Webthis page contains known demonstrations of blood demon arts in the series.
He has a blood demon art, compass needle, which applies it to combat, therefore making it a bda since it's an unnatural ability.
