In Naruto as Zhongli - Chapter 80: INAZ - 79

While reading a book, a sparkle of light disappeared. And, as it did, a message appeared.

When Bai Mufan opened his eyes, he found that the whole world had changed!

The concept of men and women in this world is reversed, women are respected, it is normal for women to go out to earn money to support their families, and men even aim to become a househusband in life!

The most frightening thing is that Bai Mufan also found that there is an extra boyboy system in his brain, clamoring all day long to make him the world’s number one boyboy!

Bai Mufan was angry.

“Even if I, Bai Mufan, am ugly and can’t find a wife for the rest of my life, I definitely won’t be a badass!”

- Description from novelbuddy

Zhuang Feng is in his last year of high school, and he’s just moved to the city. He lives with his good-for-nothing cousin, who’s always on business trips falling for get-rich-quick scams, and his Saozi (sister-in-law), who tries to make his life miserable as much as possible. There’s one upside, though; she. is. freaking. hot. But one day, he found a piece of her underwear in the bathroom…. And unfolded a series of events that will turn his life upside down.

- Description from Novelupdates

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!