MTL - I Have Nine God Tree Martial Spirits at the Beginning - Chapter 6 What's the big deal?

Yin Shuang Shuang, a regular girl who grew up in a conservative family, who never even had a boyfriend at the age of 25, suddenly transmigrated in a world where s*x is all that matters.In a world where value was skewed. Where s*x is expected, glorified, and a fight for the world’s survival. How will Yin Shuang Shuang adapt and survive?Follow her as she navigates the entertainment industry in an attempt for survival and defiance to the world. Would her journey to the top give her the freedom that she really wants? And would love be able to blossom under the society’s heavy repression of it?

The strongest Hero in history, Nakamoto Keisuke.

He was summoned to another world in the spring at the age of fifteen years old, and when he successfully defeated The Demon King, he was already thirty-two years old. He had finished his role in another world and returned to Japan, but the reality that had been waiting for him was, “Middle school graduate with seventeen years of blank period” label. He couldn’t find a decent job and had no choice but to spend his days working part-time.

Before such a Nakamoto, a beautiful girl who self-proclaimed had come to return the favor, appeared. “I’m the reward for Hero who had defeated Demon King”, said Angelica, a girl who came from another world that persistently tempted Nakamoto to make her his wife. Together with a high school girl who looks like Elsa, his beloved girl that he lost in another world, Nakamoto with his cheats skills got caught in a harem life.

A teenager named Evan Mason was reincarnated into the magical world of Harry Potter and goes to school at Hogwarts!
With only his knowledge of the future and great talent for magic, he takes the path towards the top of the magic world, only to realize that ever step he took, changed everything!

- Description from Novelupdates

Six months ago, tens of thousands of black phantom towers appeared all over the world, floating above the cities. Chemists, physicists, religious people… all of them could do nothing.