This Villain Isn’t Exactly Proper

[System + ruthless and decisive + comedic + no goody-two-shoes heroine + family rise + raising a younger sister] Lu Wei transmigrated into the second son of the most powerful minister in the Great Xuan Dynasty. He also had a brilliant older brother and an adopted younger sister who was said to be the chosen one. He thought he could spend his whole life lazing around in comfort, but then he awakened a Villain System. He could only grow stronger by targeting the chosen one. The harsher he was, the better the rewards. “Ding! The Host's younger sister possesses an Extreme Yin constitution. Host, hurry and absorb her essence before someone else gets to her first...” Lu Wei: “Shut up, you stupid System! How could I do that to my own sister... Wait, when you say ‘absorb her essence,’ which matters more, absorbing or replenishing?” Years later, when the chosen ones he'd targeted were asked what they thought of him, they said: “He's a complete and utter demon.” “He's a villain, a bastard.” “He's an elegant gentleman.” “He's lewd and shameless.”