Dear Pathetic Shinigami,

No, I will not create an antidote for you.

No, I did not create the poison inside those abominable cookies.

No, I will not help you in any particular way.

It will be your punishment for being stupid enough to even accept cookies from a traitor. Honestly, it's called ''Poison Cookies''. Don't you Shinigami understand the concept of using your brain?

Sincerely,

Captain Kurosutchi