[Romanticide]

Originally Posted by Shikijin

Spoiler for Tsukimonogatari:

He couldn't turn into a vampire anymore in the sense that, if he did, he would remain a vampire forever, and Kagenui would come kill him.

Obviously Meme, who has been missing. Ougi is probably just faking to have the Oshino surname

Spoiler for Tsukimonogatari:

I see....but didn't you say he had turned into a vampire again from Shinobu drinking so much blood?