Nezumi is silent. Perhaps a life of pain and constant fear has made Jules particularly aware of his surroundings, giving him an almost supernatural sense for danger. It has for Nezumi. If so his presence isn't as much of a secret as it would be otherwise.

"If you're planning to try anything at the party, I'll put a blade in your back faster than you can turn around."

Despite the threat, his voice is pleasant, as if discussing weather over coffee.

Birthday parties are stupid, and he doesn't even know Aster. In addition, he wants Shion to learn how to defend himself. It's no good if someone needs a constant protector. Still, this isn't the only time he's broken his own philosophy for Shion. As long as the white-haired boy never sees, it's probably okay.