User blog comment:B214/Volume 22 spoilers/@comment-73.46.6.122-20160801214709/@comment-3435913-20160802235252

Siegfried revived would be seriously needed since his demonic swords chose Kiba as their master, and his sacred gear would have left his soul after he died the first time, so he'd be pretty powerless compared to the last time is he makes a miraculous revival.