His Contractual Mistress - Chapter 16: Pretending Not Care

Su Heng had traversed to a world where demons were resurrecting, and the human realm was like hell.Water ghosts, fog demons, and drought monsters... powerful demons plagued the land. Major clans used fierce spirits for medicine, residing high above the clouds, while common folk struggled desperately amidst a divine, eerie apocalypse.In these chaotic times, Su Heng awoke with the talent of a Celestial Eater.His body grew limitlessly, gaining a property point for every pound he gained in weight.The bizarre and terrifying demons who slaughtered cities and eradicated nations were, to him, the most sweet and superior ingredients.He devoured their flesh and blood, feasted on their sinews and bones, plundered their Divine Skills, and seized their destinies.From the “Pure Yang Skill” to the “Heavenly Demon Transformation Technique,” from the “Golden Bell Guard” to the “Demon Buddha's Golden Body,” even the most ordinary martial arts in Su Heng's hands could burst forth incredible power.Years later...Su Heng's demonic body was colossal, his weight immeasurable.With a hundred hearts and a thousand arms, mortals were nothing more than ants to him — all gods and buddhas of the heavens, come to battle!

A novel revolving around being transported to another world with an op system. The mc spends his day chasing skirts and doing missions to level up. A standard journey to the top with lots of girls from various animes and games with a twist of that gaming feel (hunting mobs, doing missions).

- Description from novelupdates

Mizuno Eiji, a siscon high school student, receives the worst news from his older sister: “I have a boyfriend now.”In order to identify the man who stole his sister, he follows her on a date and… sees a suspicious figure watching the two of them as well.That person is Hasegawa Aoi, his classmate who is famous for hating men despite being a beautiful girl!“I can’t believe you are actually a brocon.”“I never thought you are a siscon.”In order to make their beloved sister and brother to break up, the two of them formed a mutual relationship and went on a date as fake lovers while following the brother-sister couple… Aoi kissed Eiji on the cheek.“You’re the only one who is… special.”Brocon x Siscon, two people who shouldn’t be able to get along is actually a perfect match…!?

Born into a wealthy family, Gu Shenwei was spoiled and carefree. However, at the age of 14, his entire family were brutally murdered, and he was caught by some bandits who sold him into slavery. As a slave boy, he entered Golden Roc Fort by chance and found the man who had slaughtered his family. He endured insults and worked hard to improve his kung fu while working as a slave boy. He learned from and plotted against his enemy under the enemy’s nose. He became increasingly ambitious as he became more and more powerful. He would only be satisfied if he completely destroyed his enemy—by fair means or foul. Gradually his bitter experience turned him into a totally different person.