Months after arriving at the Heart Kingdom, Asta still doesn't have any magic, but he's become more powerful at an alarming speed due to his training with the Spirit Guardians. Anti-magic is one of the magic attributes that falls into the "Arcane Stage" and is needed to defeat the devil. And because of that, Gaja asks Asta how exactly he obtained the five-leaf grimoire...
And that was also a way for me 
to get into that state at will.
.وكانت تلك طريقة لاتّخاذ تلك الهيئة أيضًا
Und das war auch der Schlüssel,
aus freien Stücken diesen Zustand zu erreichen.
Así fue como aprendí a transformarme
cuando yo quisiera.
Así es como aprendí
a transformarme a mi voluntad.
Et c’était aussi pour moi
Ecco, quello è stato anche un modo
per riuscire a entrare in quella modalità a comando.
E essa também foi uma maneira de
entrar nesse estado voluntariamente.
И, как оказалось, это был способ
по своей воле обратиться в ту форму!