Oblivion's Throne - Chapter 21: Cooperation

Traveling to an overhead urban world where martial arts and immortal arts coexist, the only thing Lin Shen can rely on is the avatar Golden Finger.

Cultivate in avatar, the main body becomes stronger.

Clone [Pure Yang Body]: Yang attribute skills training speed +300%, Blazing Sun Palm, Melting Soldiers Hand, Qianyang Sword Art… Any Yang attribute skills can be easily mastered, and a thousand miles a day!

Clone [Natural Dao Body]: Practice speed +500%, all martial arts skills can be understood at a glance, mastered, and crushed all geniuses!

Clone [Sword God Wuwo]: The power of swordsmanship skills +200%, the speed of swordsmanship skills training +200%, let you be tyrannical, I will kill you with one sword!

 …

“You never know how many avatars are working hard behind the person chatting with you in front of you!”

“The avatar did it, what does it have to do with my body?”

“What I’m most afraid of is that others will bully the few with the more, anyway, not as many as me!”

- Description from novelbuddy

A 13-year-old deaf teenager living in the 21st century suddenly found himself as a young boy in Japan during the early 1900s. With two World Wars, two nuclear bombs, Hitler and many other disasters awaiting his future, he thought things couldn't get worse.Except it did.He found out later on that he had actually reincarnated into the world of Demon Slayer where man-eating demons ruled the night. He thought things couldn't get worse.Except it did.But hey! At least he had unparalleled talent, incredibly special eyes and future knowledge.How will the story of Demon Slayer change with the addition of this unique character? Will so many still die if the Hashiras had one more pillar in the final battle?Or will the story end on a much happier note?

Because her appearance was not breathtaking, the Emperor breaks off their engagement and bestows her instead to the bloodthirsty, ruthless, and cold-blooded Second Prince (Wang Ye).

On her wedding night comes endless humiliation, the genuine Princess Consort becoming a deserted women. A foolish woman before rebirth, she no longer expects his love. In this world, she must possess enough talent to awe those around her, carrying herself with composure and articulating with beautiful diction, override above the nine night.

- Description from Novelupdates

The daughter of a duke, the stuttering Maximilian, married a knight of lowly status at her father’s coercion.