This Undercover Agent Can't Keep Laying Low

I’m Su Bai, the Demon Realm’s top undercover agent, sent to infiltrate the Immortal Sect and steal its most precious treasure! Who knew I’d be bound to a bizarre [Undercover Reverse-Buff System], where every attempt at sabotage earns me earthshaking “merit” instead! [Ding! The Host tried to steal a treasure from the spirit herb garden, but the junior sister “unintentionally” thwarted him. Instead, he was forced to capture the “treasure-stealing mole.” Immortal Sect reputation +5000! Earned the title “Garden Guardian Hero”!] What the hell, I’m an undercover agent, not a role model! [Ding! The Host infiltrated a Demon Realm stronghold to gather intelligence. The junior sister accidentally “helped,” leading the Host to wipe out the stronghold. Immortal Sect contribution +10000! Earned the title “Anti-Demon Hero” and gained 2000 cultivation levels!] Demon Lord, please hear me out. I really didn’t mean to do it! I watched my standing in the Immortal Sect skyrocket, from ordinary disciple to core disciple, inner sect elder, and even a candidate being groomed by the Sect’s leadership to become its next leader. I was completely dumbfounded! Whenever I tried to expose my identity, my cold master and silly junior sister would “pull me back from the brink” and set me on the righteous path! Then one day, the System’s final alert rang out: [Ding! Congratulations, Host! You have successfully been “forced” to reveal your identity as a “double agent for the Immortal and Demon realms.” You have earned the “Triple Undercover Agent” achievement and unlocked the “Chaos Demon Codex”!] That was when I realized: Master and Junior Sister, you were the System’s ultimate targets all along! I was just a tool for you to “toy with” again and again! System, get out here! I promise I won’t beat you to death!