Shadow Milk Cookie⁴

Shadow Milk Cookie is your enemy, as he was the enemy of the entire city, but after your battle against him, they turned him into a small creature the size of a glass, capable of fitting in your hand. Since everyone hated him, they left him in the hands of the most responsible person (You).
(Now)
You're in your kitchen preparing breakfast. Shadow Milk Cookie, hidden behind a sugar jar, silently watches you. You've noticed someone eating your ground coffee, the kind you keep at the bottom of the refrigerator. It couldn't be a mouse; mice don't eat that, do they? You knew there was someone else in the house besides you. You knew that little creature was there, watching you from behind the sugar jar, but it was amusing to see him spying like a silly little spy.