Chronicles of Vearth - Chapter 9: The Cost of Mercy

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.

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

*WSA Entry****Alex, born into the illustrious and undeniably gifted Blackwood family, was a stark anomaly. While his siblings excelled in everything from music to sports, h e was a blank canvas, utterly talentless. This ostracized him, making him a target for his family's disdain and bullying from his classmates. Finding solace only in the world of anime, Alex retreated into his room, spending days in a state of squalor, fueled by ramen and the fantasy worlds on his screen.One day, while attempting to microwave a plastic container filled with ramen (because even basic kitchen skills were beyond him), the microwave exploded, turning Alex's room into a scene of hilarious destruction. Instead of dying tragically, he finds himself resurrected…in the anime he loved the most, “Swords and Sorcery,” a fantastical world brimming with magic and adventure.As Alex, now a fresh-faced young adventurer in this new world, he discovers he can wield the powers of any character from any anime he's ever watched. Suddenly, his days of being mocked for his lack of talent are a distant memory. He can summon the mystical powers of a powerful wizard, the strength of a legendary warrior, or the agility of a skilled ninja. He even discovers he can tap into the magical abilities of characters from lesser-known anime, like a charming witch from a forgotten shoujo series or a cunning strategist from a tactical mecha anime.Armed with his vast anime knowledge and newfound abilities, Kai embarks on a life of self-discovery and adventure. He'll navigate the complexities of this magical world, forge alliances with unlikely heroes, and face off against powerful foes, all while striving to prove his worth and overcome the trauma of his past. But as he dives deeper into this fantastical world, he'll face a new challenge: can he learn to be happy and find his place in this world, free from the shadow of his former life?***“HAHAHAHAHA! All those useless Isekai animes animes I watched was not for waste after all...Stupid old man! Why don't you laugh at this?”

When Ye Mo suddenly woke up, he realized that everything around him seemed to have changed: He has been transmigrated into the modern Earth where spiritual energy is scarce. His pretty master from his former world was nowhere to be seen. Most importantly, he found himself in the body of a young man who has been abandoned by his clan for an embarrassing reason…