STRIKER: Independent Beast Tamer - Chapter 328: Part 4: First mission (10th Zone)

Necromancer】, Originating from ancient Europe, these mysterious wizards were often male, knowing how to summon and enslave the souls of the deceased to create undead creatures. Usually, those who practiced this craft had frail bodies, pale complexions, and twisted psyches, shunning and distrusting others. Some, who mastered the art, could even trade their flesh for an immortal Lich’s life. But can someone tell me how to practice the art of necromancy in the 21st century? In a law-abiding society, I can’t even get a skeleton! Misumi Mikoto: Doctor Chen, come quickly and help me examine this body; I can’t find the cause of death! Jounouchi Hiromi: Doctor Chen, come check on this patient first; what exactly is wrong with him?

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

“I’ve really had enough of this damn place…”Li Muyang has transmigrated and become a demon sect’s outer sect disciple.The good news is that he has a system.The bad news is that this system can only play games.“Well, playing games is still better than nothing.”In the game, he is powerful and mysterious, causing the otherworldly fairies to be deeply mesmerized.Since it’s just a game, why not aim to collect all the characters?Until one day, the fairies from the game come looking for him.Li Muyang is shocked. How did a character from the game become reality?“Uh, Fairy… let me explain!”I was really just playing a game!

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.