It's a dragon's tooth. Were you expecting something different?

[ Kojirou wasn't watching Maki be grossed out while he was carving the teeth out, so he wasn't exactly aware that she found any of this especially unpleasant. It's just carving up a big monster, there's nothing weird or gross about it! ]

Ah, but I believe dragon's blood has different alchemical properties from dragon's teeth so you'll have to wash it clean first.

[ This here samurai's been a wanderer for a long time. Making messes out of wild animals is merely a day in the life. ]