explain me about the queen card quest

[Mestre ninja X]

i win all cc group but where i can found king menber?

Go to the Infirmary and challenge Dr. Kadawoki. She will tell you that she used to be King, but she gave it up to someone else. Then go to your Dormitory and choose to take a rest. King should wake you up and challenge you at night.

i do this but don't happen nothing