The New Gate - Chapter 3Book 19: (4)

The idiot Long Gen pretends to be a pig and eats a tiger, takes advantage of the girls in the village, travels across the countryside and forests, monopolizes the beauty and coquettishness, and achieves the legend of “Dragon Gen”. There is a widow in front of the door leaning on the door to watch, and a sister-in-law next door looking through the screen window… This book is determined to be a stallion, with the goal of pushing down and being pushed.

- Description from novelbuddy

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.

What if you spend your whole life like a vegetable in a hospital bed? Only being able to speak and listen. Just that. Would you go crazy? Unbalanced? What if it was all the fault of a degenerate madman looking for his parents' inheritance? Would you be angry? Would you be mentally broken?That was Kayden's life for 20 years and as quickly as it started, it ended, but luckily for him, reincarnation existed and by some miracle, he still had his memories of it. And....his new world had...magic.In the first moment of consciousness, Kayden made a promise to himself, in this life, he would achieve everything, he would reach the height of power, he wouldn't give a damn about women or money, futile things that would condemn him to mediocrity, his focus was to have the power to rule his destiny, this time he would not be a slave to his own life, he would be a monarch.

Imagine being forced to live, after death, as incorporeal bodies trapped in a vast space of nothingness for thousands of years, with nothing to do but exchanging past memories with other cohabitants (read: weirdos). Everybody wanted out, but there was no way to leave the Void…

Until one day, a young man was finally summoned, as a powerful but reluctant mentor, by a bubbly and motivated but completely naive young girl. Baiyi, finally out of the Void, was the only one who could save all of the other 32 souls from their prison and his summoner might just be The Key to their freedom.

However, Baiyi had to use the techniques and abilities the other souls had taught him throughout the years, and together with his own extensive knowledge of anime and game tropes from his shady and dangerous past as an otaku, to face the biggest challenge of them all: training the clumsy young girl he was forced to partner up with… into a competent sorcerer!

This is a story of heroic adventures, cunning strategies and romantic tales. How will our MC thrive in a world completely strange to him? Where will his ambitions and abilities take him in the palace?

- Description from Novelupdates