Such a refined lady would of course not be easily won over... [You are so right, Yuuki. Nevermind that Tenshi accepts some parts of the staff just fine. To take that into account would be to involve logic in this.
It's Sebastian's right hand that's injured, not the one harbouring his contract seal, but pulling off the glove reveals his black fingernails. And there's... hardly even a trace of the injury that was there a minute ago, even as the amount of blood left from it suggest it shouldn't close up so quickly.]
Ah, I did say that it is nothing. [See? It's not like he'd have to worry about infections either...]