Quick Transmigration: After Tormenting Scum, the Sickly Beauty Gets a Happy Ending with the Villain

[One-on-one romance + both leads are each other's only one + revenge on scumbags + feel-good power fantasy + takes down the fake sweethearts + sweet on the outside, sinister within] [A stunning, scheming beauty who seems sickly but is secretly ruthless x powerful villains with all kinds of twisted, unhinged tendencies] Shen Chiqing was famous in the System space for being a sickly beauty. By slacking off on his missions every day, he repeatedly landed at the very bottom of the Host rankings. So when the System space decided to punish the lowest-ranking Host, Shen Chiqing's punishment left him hundreds of billions of points in debt. Looking at the bill for hundreds of billions of points, Shen Chiqing steeled himself to pay it off. “It's just points, right? No more slacking off. I'll buckle down and win them over!” System 668, who had been by the sickly beauty's side for years, saw its Host suddenly acting so confident and figured he'd be back to slacking in a few days. But Shen Chiqing had no intention of slacking. Instead, he chose the most difficult section of the System space: taking revenge on scumbags... [World One] Sickly, adorable, sweet-on-the-outside, sinister-within weakling with an ability x vicious, battle-hardened, obsessive, twisted zombie king Shen Chiqing is thrown into the body of a weakling with the lowest ability rank, whose only power is to release an intoxicating scent that can knock enemies unconscious. From the start, it takes only a few days for his scumbag lover to kick him into a dangerous area teeming with zombies. Shen Chiqing expects to be bitten to death, but not only does he survive, he even wins over the zombie king. The zombie king wraps his arms around the sickly beauty from behind, his eyes filled with hunger. “Chiqing, you smell so good.” [World Two] Sickly bride sent to a distant empire x heir to the empire After transmigrating into the body of a bride in the empire, Shen Chiqing not only humiliates the person who married him for mistreating the original owner, but also takes down the little schemer hanging around his spouse. The heir, thoroughly seduced by the sickly beauty, pulls him into his arms. “Having fun? Want me to humiliate him even more?” [World Three] Sickly, beautiful, sweet-on-the-outside, sinister-within fake young master x mad, twisted real young master After transmigrating into the body of Shen Chiqing, the fake young master everyone calls ugly, his first move is to strip off the original owner's hideous makeup and reveal his own beauty from every angle. He not only gives his scumbag lover a humiliating slap in the face, but also catches the attention of the mad real young master, who's been coveting his beauty from the shadows... One night, the real young master comes to Shen Chiqing's room and proposes a “deal.” System 668 watches its Host, who used to flirt with people in nothing but a soft voice and ordinary words, and falls into deep thought. The System declares: My Host is sinister through and through! He used to pretend to be sick and slack off! [More worlds awaiting unlock...]