One of the main themes of the story is being strong enough to make choices-
Gakuro has kept making choices while being stripped of all power, because he, at heart, is a warrior who walks the hero's path. In a way, he'll always be strong. It's LITERALLY in his blood!
#鵺の陰陽師
If a level 6, or something ABOVE the Hyo is created, then the only way to defeat it will be Gakuro dual wielding Midnight Crimson Sun and Moonlit Night's End, achieving Eclipse...
#鵺の陰陽師
Damn, so Gakuro is a kid that was groomed to become Nue's contractor since the very beginning...crazy.
Nue's Exorcist (鵺の陰陽師)
Chapter 149: The Path You Gave Me