Overpowered Villain Returnee in the Apocalypse - System is for Losers - Chapter 6: Perfect Duo

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.

At 3 years of age, her father went missing. At 15, the muscle in her hand snapped. At 16, her mother passed away in a car accident. At 19, she was framed by her uncle. At 22, she was burned alive by her newly- wedded husband and her best friend. Perhaps it was God’s sympathy that allowed her to return to the time when she was 15 years old to re-live once more. The previous lifetime of being low- key and having forbearance resulted in betrayal and misery. In this lifetime, she must be lofty and domineering to let those who have bullied her suffer a terrible end!

- Description from Novelupdates

Waking up in nothing but a cage would make anyone wonder: What the hell is going on?But fortunately, you’ve been reincarnated with a cheat—a system designed to help you escape this dire situation.Now, with the gacha system to guide you, navigating this dangerous world of Marvel becomes a little more manageable. After all, you never know when a certain guy might kick off a population control program, another might decide to play humanoid chess, or yet another starts scheming to rule over everyone.Wait… wasn't that last one kind of the same? Anyway, it's a perilous world, and you were thrown into it without even being asked.So, good luck to me!*******A fanfiction set in the Marvel Universe with gacha elements.It's slow life at first and then it paces.

Yoon Eunah was engaged with Lee Young-soo by their parents. But the marriage didn’t go as it was planned.Faced with Eunah’s absence. Eunbi, her younger sister ended up marrying Young-soo against her will to save her parents pride and self-esteem.Neither her’s nor his parents came up with a plan of involving Eunbi and Young-soo into the marriage. It was full and fully planned by Young-soo, he emotionally advice Eunbi by using her family weakness as his strength to get her acceptance to marry him.Eunbi was suspicious of Young-soo’s plans for marrying her whether, did he married her for revenge? (or) did he married her for her wealth? What will happen when Eunbi finds out the real reasons why Young-soo has married her, will she forgive and accept him as her husband and lead a happy life?