Gauche is gravely injured in the fight against Dante which causes Asta's devil powers to go berserk.

He completely loses himself and relentlessly attacks Dante! But Dante becomes even stronger and Asta ends up on the ground. Then Captain Yami and Finral show up to the scene shocked and Yami is instantly enraged and joins the fight! Meanwhile, the Heart Kingdom is under attack by Vanica and her subordinates and the Spirit Guardians went to fight them, but Vanica's subordinates who had been given devil powers were far more powerful than expected, and...
It doesn't matter what form 
you take. You're always Grey.
.لا يهم أيّ شكل تتّخذين، فأنت تبقين غراي
Egal wie du aussiehst,
Tengas el aspecto que tengas,
tú eres tú. 
Tengas el aspecto que tengas,
tú eres tú.
Peu importe ton apparence,
c’est bien de toi qu’il s’agit.
Tu sei sempre Grey, non importa quale forma prendi.
Não importa a forma que você
assuma. Você sempre será a Grey.
В каком бы облике ни была…