User blog comment:Omega natsu2/Chapter 365: Fairy in the Jail!, Predictions./@comment-3075024-20131219183908/@comment-3075024-20131219185159

BEELZEBUB: We will the person responsible of turning students of Ishiyama into stones .. not maybe fully revealed but like in shadows. AND this time around Oga will get the seriousness of the situation.

I for one think this is doing of one of those "7 Sins" .. just a manga-fan instinct's's call >_>