Maybe a Fake Gintama - Chapter 583: ears with a Good Reason and Tears Without Any Reason at All!

A tree of 10,000 flowers, the world is the door.
The spells change a lot, but the hearts of the people are unchanged.

- Description from Uukanshu translation

Chu Chen, who used to be an ordinary university student from a common family, gets a peculiar system installed in his head one day.The system makes him capable of obtaining all kinds of valuable properties as long as he finishes the various check-in missions it sends out.What's more, a Good-Luck card in his possession brings him enormous luck, allowing him to solve whatever trouble that comes his way with almost no difficulties. Due to his abundant wealth and attractive appearance, Chu Chen receives great attention from the public and the admiration of dozens of pretty girls.But Chu Chen is, after all, a man with honesty and integrity, so with his money and luck, he helps his friends in need and punishes wrongdoers. With all kinds of different character perspectives and situations.This story vividly portrays the realistic and materialistic sides of people as well as the convenience and power of a rich man.-----This book is also known as “Why Am I So Handsome, Still So Rich, You Are So Ugly, Still So Poor”, “Being the Rich Man is Too Hard, I Don't Want to Be One Day”, and “Becoming the Rich Man from Sign in”

Wu Lai was an ordinary high school student. One day he was struck by a flash of lightning from a different world, and suddenly entered a fantastic world full of magic and swords. Since then, he started a totally new life. In this supernatural world, he had his ups and downs, experienced numerous battles, subdued powerful evil beasts, and fell in love with a belle. His nickname “Demon King” was remembered throughout the ages there.

Stay or return was a question. In the face of this choice, Wu Lai, with the nostalgia and gratefulness for the original world, finally chose to stay…

Here was the legend of “Demon King”…

- Description from Novelupdates

What the heck? She, a famous doctor from the 23rd century, turned into a village peasant girl of a different world!