MTL - Realistic Mary Sue - Chapter 12

Accidentally reborn as the son of the distant cousin of the Squib, the mother of Harry Potter’s friend Ron, and lived in this world as the second generation of Squib for eleven years.

He originally planned to be an accountant like his father in the future, but he didn’t expect fate to play a joke on him, and he didn’t know the slightest bit of magic, but he received the exact same envelope as his sister on his eleventh birthday.

Due to the expectations of his parents, he reluctantly accepted the reality, but inadvertently discovered another secret…

- Description from novelbuddy

A man is reborn into the world of Avatar: The Last Air Bender as a waterbender from Katara's tribe. Best of all, he was the same age as her, and he had a system with him to help.He knows the future and a system that lets him continuously get stronger by completing quests or long-term missions, as well as giving him the ability to copy abilities from others for himself. He will become invincible in the world of Avatar, even more so than the Avatar himself.

Three years after graduating from Hogwarts, Felix entered the school again, only this time as a professor!

What kind of sparks will come from the combination of Muggle wisdom and magic?

[WARNING R18+]In his previous life, the loser Li Long thanked God for giving him another chance to be reborn with his memories. And in an accident Li Long got a legacy left by a dual cultivator. So Li Long decided that from this life on, he would be good to himself and others, and vowed not to suppress the dark personality of his previous life. No matter if he was spit on by thousands of people or was not tolerated by the world, he would live only for himself in the future...