She had always wanted a brother. And she had one now. Sebastian. It was like always wanting a puppy for a pet and being handed a hellhound instead.

"No," he said. "No, it isn't."
Clary sat back. "You don't just get to say no."
"This plan involves me! I get to say no! No."
"Simon-"
Simon patted the seat beside him as if someone were sitting there. "Let me introduce you to my good friend No."
"Maybe we can compromise," she suggested, taking a bite of pie.
"No."
"SIMON."
""No" is a magical word," he told her. "Here's how it goes. You say, "Simon, I have an insane, suicidal plan. Would you like to help me carry it out?" And I say, "Why, no.""

The house was lively with the sound of voices, and a sign saying HOUSE RULES was pinned to the wall beside a staircase leading up.

HOUSE RULES

• No shape-shifting in the hallways.
• No howling.
• No silver.
• Clothes must be worn at all times. ALL TIMES.
• No fighting. No biting.
• Mark all your food before you put it in the communal refrigerator.