User blog comment:B214/High School DxD BorN Episode 9 Review/@comment-23847729-20150601192532/@comment-26322543-20150601222053

Yeah, he wasn't gigantic in the LN.

It wasn't that his fingers went back to normal, in the LN, only the arm or changed while the anime also changed the user's body structure. So it's still be claws there.

My guess (as well as other people's) is that the Oppai Dragon Song will end up summoning Chichigami. Comedy. Gold.