Asta, Noelle, and Magna manage to catch up to the Devil Believers who had taken Nero. But they find that the Devil Believers have now grown in numbers. Magna goes back to tell Yami of the situation. Asta and Noelle are left behind and try to do what they can to save Nero. But it appears that the Devil Believers have made up their minds on achieving their goal, even if it costs them their lives.
So basically, they want to 
hand Nero off as a gift.
.يريدون إذًا تقديم نيرو كهدية
Nero soll also ein Geschenk für sie sein?
Nero es un regalo para él.
Nero es un regalo para él.
Leur intention serait d’utiliser Nero
comme offrande ?
Quindi in sostanza vogliono offrire Nero come dono.
Então, basicamente, eles querem
entregar a Nero como uma oferenda.
Неро, получается, гостинец для него?