The ghost of the haunted tea cup, Chaiko. She will appear in your cup after it is filled with hot water and ask what kind of tea you want to drink. If you answer wrong, you will be strangled with a rope and dipped in boiling water. The key to correct answer is very clear when you think about it, though =3 If you answer right, she'll stay and have a cup with you, then grant good fortune on your life.

(Wanted to make up a little ghost story. Not sure if this story already exists, though =P)