Ankoku Kishi Monogatari ~Yuusha wo Taosu Tameni Maou ni Shoukansaremashita~ - Chapter 74.1: God of Sleep

He Bai won the lottery, became rich, and reached the pinnacle of life. Then, he inadvertently took a picture of the Film Emperor Di Qiuhe being killed. And after reporting this case to the police, he was reborn in a midst of confusion.

He Bai: I don’t have any horrible relatives to abuse. Why was I reborn?

Di Qiuhe: But I do.

He Bai: I also haven’t been betrayed or harmed by anyone. Why was I reborn?

Di Qiuhe: But I have.

He Bai: I just want to have some money to live freely and eat well. I already achieved that goal, so why was I reborn?

Di Qiuhe: I have money, but don’t live freely or well.

He Bai angrily flips the table: So what’s the use of my rebirth! Just to make me suffer again?!

Di Qiuhe (Holding and Touching He Bai): Be my lover, you’re only responsible for eating “lollipops,” you won’t eat any bitterness.

He Bai: Leave!

So basically, this is a sweet story of a naive and cute person who goes back to the past, flaps his little butterfly wings, and helps the man who used to be last life’s big Film Emperor, but in this life, is still a miserable Great Devil King, to walk towards the pinnacle of life (while also dragging someone home)!

- Description from novelupdates

Zhou Yu, a reclusive otaku, who did not like to go out of his house, was one day forced out of his house by a series of unexpected events.

- Description from Novelupdates

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?