User blog comment:Crimson and Darkness/DxD Updates 2~/@comment-27083298-20170701011308/@comment-1359322-20170701112329

Maybe Elmen sucked on the blood of everyone in the Hyoudou household when they're sleeping to find the most delicious blood to drink. XD

Well don't think too much into who, it's more of a joke or parody Ishibumi occasionally writes. He even wrote one when Gasper appeared on a volume cover.