Synthesis Wizard - Chapter 13: What Wizards Seek Is Truth, Not Eternal Life

A good-for-nothing man married a beautiful girl but was kicked off the bed on the wedding night. Furiously, he wrote a bill of divorce and ran away.
He was schemed a car accident in which he nearly lost his life. However, it turned out to be a blessing. He swallowed the soul that passed through the outer world, thus obtained superb medical skills and martial arts.
Later on, with the silver needles and invincible martial arts, he embarked on the road of counterattacks and was committed to his great dreams.

- Description from Novelupdates

Mages, swordsmen, gods, demons, and prophecies. The Heavenly Games is a tournament where myth and man meet, a purgatory where the dead arrive to fight for their one true wish. Amongst the reborn are Dasha Pang and Kazi Hossain; one a professor from the west whose cold-hearted intelligence has surpass the gods; one a traveller from the east who has come to appreciate humanity. A villain and a hero. The boy born unwanted and the guided one. A martial artist and a mage. Gods amongst men.Expect battles of epic proportions, stories ripped straight from mythology, interactions between gods of various pantheons, and duels humanity has debated for centuries.Expect the Strongest Among The Heavens.***+ Dual Protagonists. Overpowered geniuses. One MC that is villainous and manipulative. The second MC that is heroic and kind.+ Detailed power system that includes Western Magic & Chinese Cultivation/Martial Arts (Xianxia)+ LitRPG, dungeon crawling, fantasy guilds, and more! + Abrahamic religions, Hinduism, Indigenous (Americas & Australia), Greek, Norse, Egyptian, and Japanese mythology

After traveling to Little Garden, Su Jin, who had just obtained the divine status and became a quasi-god, suddenly had a forum invitation in his eyes.

Butterfly Chanel Megumi: How to kill ghost dance at night? No misery?

Aizen Kuyousuke: How to take out the collapsed jade in Rukia Kuchiki?

….

Questions popped up one by one, and Su Jin subconsciously replied: Thank you for your invitation, people are in the small garden, they have just become gods, and the answers are anonymous.

- Description from novelbuddy

The story is about a boy entering high school, who answers a strange call from a public phone one night. The caller challenges him to a bet: She’ll remove the birthmark which he sees as the cause of so many problems, and he’ll have fifty days to win the heart of a girl he’d considered far beyond his reach. And with this, a very strange summer begins.