MTL - The Manga of Ten Thousand Realms - Chapter 400

The tale of Oliver.
An orphan boy from a Mine, in 19th century Europe, filled with Magic.

Qin Yi was reborn half a month’s time before the apocalypse. In this life, having already seen the true colors of her scumbag sister and father, she swore to let them have a taste of their own medicine—an eye for an eye. She disguised herself as a man and kept improving, getting stronger day by day. Common people hailed her as «Prince», making countless people bow in homage.

Having spent her childhood confined in chains, Alice was a child who knew neither love nor joy. Scorned by her family while being tortured in the name of the greater good for years, she grew numb to all feeling and thought. That is, until one day, a man in black offered her a chance to escape.There were once rumours widespread of an endless hell, a land of glorious death and dreadful opportunity. Fools went in search of it, and the clever never ventured into it. Only when its baleful mysteries spilled unto the earth did all hear its name — the Abyss.A single drop of its blood could give someone the power to control shadows, move faster than sound, or strength greater than the strongest man. Yet, it all came at a cost; the blood would always make sure those who consumed it became part of the Abyss, with one exception — Alice. Cast away by her own blood, it was her destiny to rot in a gilded cage.But, that fateful day changed everything. Gifted a second chance at life, a chance to turn her life around and claim vengeance against her family, a chance to dive deep into the Abyss and gain the power to govern her own fate, Alice took his hand, unaware of the destiny unfolding before her.

Protagonist travels between different anime worlds to right wrongs and uncover his reason for being along the way.

- Description from Novelupdates