MTL - Necromancer and Super Cemetery - Chapter 848 854? Sacrifice

Ryu Han-bin, the main character who fell into a new world after being chosen as a ‘suitable person’.

Because of the error in the guidelines, the training is repeated endlessly…

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

Collection of short stories.

- Description from Novelupdates

Bai Jin is reborn before the sanctification of the Three Pure Ones and is taken as a disciple by Tongtian. In a strong sense of crisis, Bai Jin embarks on his path of survival, currying favor with his elders, making powerful connections, subtly influencing the grand scheme of the ancient cosmos, and building a network of relationships to protect himself. In the process, Bai Jin also earns numerous accolades.Tai Shang: “Bai Jin possesses great wisdom!”Yuan Shi: “Among Tongtian's disciples, only Bai Jin is worth noticing.”Tongtian: “It's Bai Jin who understands me the best.”Zhun Ti: “When Bai Jin becomes shameless, this poor monk willingly admits defeat!”Duo Bao Rulai: “Bai Jin is a despicable, shameless, treacherous villain.”The Jade Emperor: “There is no one more loyal and righteous than my nephew, Bai Jin.”