Priceless Baby: 101 Bedside Stories - Chapter 8 - Ridiculous Drama

Kyo Mazuru traveled to the world of Bleach and landed in the forest of Menos Grande at the beginning.Picking up a asauchi left over from Shinigami's death, and starting with a sword, he spent hundred years in the forest of Menos Grande to survive, slashing countless hollows, and his slashing skills reached the peak, until one day, he met a man who claimed to be Mr. Aizen Sōsuke!Mr. Aizen couldn't bear him to live alone in Hueco Mundo, so he invited him out of there and brought him to Soul Society!After that, Kyo Mazuru's Shinigami career began!

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

It was an era of war unlike ever seen before in Murim history.To end the horrible war, numerous heroes had sacrificed their lives and disappeared on the battlefield.This is the story of a man that longed to be a hero and the story of his brilliant rise to the top.***Joo Seo-Cheon is a man who luckily survives the Warring Era and becomes the Hwasan sect’s elder, only to live a life full of regrets and doubts.He lays on his deathbed waiting for the inevitable when he is returned to the past…

When Ye Qing Ran wakes up, she finds that she has transmigrated into a book. She has become the vain, domineering, and evil villain who dies a tragic death.