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...
but the reason I was able to use it 
immediately is because of my ki!
!لكنّ سبب قدرتي على استعماله مباشرة هو الكي خاصتي
Aber dank des Ki konnte
ich es auch beherrschen lernen.
mais c’est aussi grâce au ki
que je l’ai maîtrisée.
ma il mio ki mi ha permesso di usarla immediatamente!
mas eu consegui usá-la
imediatamente por causa do meu ki!