From the Start, I'm the Primordial Chaos God King, and My Sister Collapses on My Bed in the Rain

(High martial arts, overwhelming power, one heroine, incredibly satisfying and sweet) This is a high-martial world where combat mechs coexist with ghosts and ferocious beasts. Li Zefan bonded with a Little Sister Pampering System. His first mission was to comfort his adorable stepsister, who had come home soaked from the rain and fainted in bed! After completing the mission, Li Zefan gained the identity-based supernatural ability of the Chaos God King and became the principal of an A-rank martial arts academy! By doting on Bai Shihan, he successively obtained the ever-changing Chaos Blade and a divine-grade Chaos Cauldron, crushing the era’s prodigies step by step! At the same time, he noticed that his sweet, well-behaved non-biological little sister was growing stranger and stranger! “Brother, you wouldn’t happen to be the principal of Dragon Martial Spirit Academy, would you? Hehe, guess whether I’ll tell anyone!” “Mm, if I kiss Zefan’s pillow, does that count as kissing you?” “Husband, you’re not allowed to get so close to other women. You can only ever be my man. Why are you spacing out? Did you hear me?” There was nothing he could do. His adorable wife was his to spoil, and Li Zefan could only indulge her. At nineteen, he held back an S-rank ghost horde and an S-rank beast tide by himself. At nineteen and a half, he slew a Thunder Dragon in the Deity Transformation stage! Why work so hard? Li Zefan: “Because I want to keep this girl safe for all her life!”