My Dungeon Life: Rise of the Slave Harem - Chapter 1722

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

- Description from Novelupdates

Ye Kai was born with a weak body, spending his days with his mother and sister. on such a day he heard a ding voice and got Unlimited Item Shop System, where he can buy anything.The first thing Ye Kai buys from his Unlimited Item Shop System is Lust System, to make his fantasy true, where he is having sex with his mother and sisters.---The story is slow-paced so I will increase the pace from Dark Sky City Arc, so someone doesn't like slow paces then read it till the Dark Sky City ArcThird, if you think MC is beta then it's only in front of his mother, otherwise, he doesn't care about other people except for his family, and he is...pretty much ruthless towards the people.

Our protagonist, Xu Yi, is born with a silver spoon in his mouth, able to live a happy and worriless life. However, he wasn’t able to enjoy this life for long, as the revenge of his family’s enemies quickly caught up to him.The enemies are much more powerful than Xu Yi; therefore, he has no choice but to be obedient. However, forbearance is not always a good policy. The enemies take advantage of his passiveness and bully him even more. These little sparks of anger have finally become an uncontrollable fury for Xu Yi, compelling him to seek revenge.

In the year 298 from the era of the gods, elementary school girls Sumi Washio, Sonoko Nogi, and Gin Minowa are tasked with an important mission. They are to become heroes and fight Vertex, a mysterious enemy that is attacking Shinju-sama, the god tree that protects Shikoku, the only area in the world that is still habitable. What they don’t know, is that this fight will cost them more than they could have ever imagined.