The Demon King is an Idiot [BL] - Chapter 2: The first mission.

Tong Yao never expected that getting a milk tea could result in getting struck by lightning on a sunny day, and then waking up in the 1980s. She became a mischievous, spoilt wife of a top-tier doctor from the future. Rather than leading an ordinary life, she was caught eloping and stealing money, and reacted with crying, making a fuss, and hitting walls.Under the hopeless circumstances, she discovered she could understand animal language. While other time-travelers were busy making money to support their families, she was just enjoying the show.“The deputy director's wife accepted five jins of pork from a patient's family. The old couple is squabbling behind closed doors right now.”“The Dean has had a flare-up of hemorrhoids these past few days and can't sit on a chair.”“Mr. Li's wife is a tough woman. That missing tooth on the left was knocked out by her.”“Tong Yao has improper conduct. She used to secretly meet people in the village.”Tong Yao didn't expect the day would come when she would be the talk of the town....One day, Tong Yao heard a stray cat at the door muttering, “Dr. Si is having a date with a nurse in the corridor.”Furious, Tong Yao went to catch them in the act, only to find the doctor was discussing a patient's condition with a nurse who was over fifty. Wanting to run away, Tong Yao found her escape route cut off by the doctor, who backed her against a wall, “So I heard you came to catch us, huh?”Tong Yao never expected the saying, 'Those who always walk by the river eventually get their shoes wet,' to come true.

After dying in a tragic accident, Oscar was reborn into a lowly tribe in an ancient world of great magic where only the strongest survives. Following the decimation of his family, his only solace comes in the form of a remnant which resides in his body.Live the tale of powerful warriors and deadly monsters, and tell the story.

Lenny, an orphan from the Sector 41 slums, suddenly finds himself in possession of a rare and unknown affinity. It allows him to upgrade himself, using energy acquired from spirit beasts. But will he gain enough power to defend himself against those with every advantage he has never known?Explore the Western Alliance, where the Four Pillars rule supreme, and all vie for the title of the strongest faction. But when those sworn to protect the people fight amongst themselves, who will save them from the biggest threat they've ever known? And can one young boy, with no family and a handful of friends, survive all that chaos?

Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of power enemies depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils …

Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest!

Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.

- Description from Novelupdates