Wish-Granting Cat? My Wolf is Better！

After the Shifter Kingdom's defeat, young shifters were sent as tribute. My sister Seraphina took the healing Merman, while I got a dying black cat. But soon, my cat turned out to be the Eight-Tailed Feline, a wish-granting shifter. I used my only wish to grant him his ninth tail. While the moment he got it, He teamed up with Seraphina to murder me. When I woke, I was back at the Selection. This time, I'm choosing the loyal wolfdog. Without me, let's see how that cat ever grows his ninth tail.