Demon Child: After Beating Up the Immortal, I, the Deer Attendant, Switch Sides

After watching Ne Zha 2: The Devil's Havoc in the Sea, I step outside and get launched by a dump truck, transmigrating straight into the body of Lu Tong, a disciple of the Boundless Immortal Elder. Where's the System? Where's my golden finger? I'm freaking out, but it turns out I really do have one. 【Ding! The Host is near a target character. Activating the Ultimate Betrayal System! Betray your master to earn lavish rewards!】 My eyes light up. This is tailor-made for me! That old schemer, the Boundless Immortal Elder, acts like a paragon of virtue, but behind the scenes he's always up to no good. I've been sick of him for ages. I get right to it and release Shen Gongbao, taking him to find Ne Zha. After all, the safest place is by the protagonist's side. To make peace with Ne Zha, I head to Biyou Palace to try to revive Lady Yin, and maybe find myself a new master while I'm at it. I just hope my reputation in the primordial world doesn't take too much of a hit down the line. But I can't worry about that now. To survive and change my fate, I have to keep getting stronger! And my System is my greatest asset! 【Ding! The Host has encountered a new betrayal choice...】 As I listen to the System's prompt, the corners of my mouth lift slightly. My dear master, I'm sorry.