A note from the starry sea of memory, delivered with a gift. It appears to be a cordially worded letter from the Phantom Thief.
A Note from Cipher
To Gray Mystery:
Hey! This should be the last phantom thief letter I'll ever send you! "When you receive a phantom thief letter, be prepared to lose something." You're ready for that, aren't you?
But don't worry! No need to guard your pockets or frantically check your bags. I'm not here to steal. I'm here for our final "split of the spoils."
This lucky cat coin has been by my side during every heist. No matter what tight spot I'm in, just holding it turns my luck from woe to weal. Regardless of what weighs on my mind, tossing it up and catching it makes my steps mysteriously lighter.
I've long seen that you also keep quite a bit of "Trickery" in your heart. Otherwise, how could you have deceived destiny and stolen from the future? So, I'll entrust this "stolen article" to you. May it help you dodge every misfortune and obtain everything you desire.