I'm the Villain Mentor: From the Start, I Grant My Disciple Accelerator

[Scheming mentor + mastermind villain + shameless + lighthearted + feel-good power fantasy] I'm Lin Ye, the good-for-nothing older brother of an S-rank hero, a walking badge of “shame.” Until one day, a voice rang out in my mind. [Ding! An A-rank villain has been identified. He has the potential to become a major villain. He's being bullied at school, his grandmother's lifesaving money has been stolen, and he's about to turn completely evil!] [Host, please make a choice] Step in and offer some feeble, powerless moralizing. Call the police and watch a transaction between power and money unfold. [Whisper in his ear: “If the rules won't protect you, then become the rules themselves.”] I chose option three. That night, a +rank criminal known by the codename “Vector” appeared out of nowhere, shocking the entire city. Meanwhile, at home, I was making chicken soup for my hero sister, who had just accepted the pursuit mission and looked troubled. My sister: “Big Brother, that criminal is too cunning. We don't have a single clue!” Me, smiling gently: “Don't worry. Take your time, and be careful.” Then I fabricated clues to point toward another unsolved case, perfectly misleading Su Muna, the A-rank star investigator who came to investigate. But I never expected this icy beauty to show up at my dinner table under the pretext of “investigating,” scrutinizing me with her gaze. “Mr. Lin Ye, what does it feel like to be a genius's older brother?” My sister was furious on my behalf, but I merely smiled bitterly, playing the “poor victim” she wanted to see. With my most beloved sister as my greatest enemy, the smartest opponent playing right into my hands, and the whole world searching for the mysterious Joker... I'm just an ordinary older brother who wants to make tomato and egg stir-fry for his little sister. And honestly, it's not a bad feeling.