MTL - Shoujo Grand Summoning - ~ 1997 is endless! Take control of everything in the system! ...

As a walk-on, he had been the mistress of his sugar daddy for three year. However, they only had met each other for a few times.
As a boss, his sugar daddy had tons of lovers.
The walk-on: The cake shop is the only thing I love in this world. Lovers? Never want one.
The boss: No problem. Nobody wants that.
Then, they fell in love with each other…
Shameless playboy x heartless rogue
1v1, this is not a decent love novel.

- Description from Novelupdates

Alexander lived—and died—as a wretched, poor virgin, meeting his end as he laid in the hands of his own mother.Stricken by a strange illness, his final vow was a desperate plea: If I’m ever reborn, I’ll attack all the ladies. I'll give my canal desires more attention!Miraculously, fate answers.Reborn into a world eerily similar to his last, Alexander awakens as a Guardian Candidate—a chosen warrior destined to endure trials and serve the gods.But he has no interest in destiny. Armed with divine skills and a frustratingly incompetent and seductive system, he rejects his ordained path, determined to seize this second life for one purpose: conquering women.Now, as a self-aware, unapologetic pervert, Alexander embarks on a relentless quest to charm, seduce, and claim every beautiful woman he encounters.Will his insatiable appetite lead him to the harem of his dreams, or will his reckless pursuit bring another premature end?Join Alexander in this wild, uninhibited adventure—where desire defies duty, and pleasure reigns supreme!

Chen Lihua our female lead is one of a kind. she's led to an arranged marriage to our male lead Liu Longwei, the CEO of Liu Group by her mother. She didn't even get to meet her husband to be physical till the day of the collection of their marriage certificate.

Once upon a time, an Alchemist Grandmaster from the World of Immortals accidentally took possession of a playboy, who hailed from a rich and powerful family, and became a student in the middle of his midterms.