Villain Exchange

Got the 'system'? Jiang Zhao: Hurry! Redeem me Superman serum, Iron Man suit, and Saiyan three transformation forms~~~ What? Can't the skills and bloodline of decent characters be redeemed? ! Can it only be exchanged for villain abilities? ! And you have to kill the villain with your own hands? ! Therefore, Jiang Zhao embarked on a road of no return, defeating various demons, devils, and perverts along the way...