Mushoku Tensei - Volume 1 Prologue

“Xi Linghun wears the body of Xi Ling, who is about 20 years old with the same name and surname, and instantly becomes a rare male worm!!!
囧–×You must get married as an adult? Otherwise, the system will marry all the females with the top ten matching rates to him!!!
(Noodles tears) In order to maintain integrity, he must catch a bug and get married.
Xi Ling Zhuang Mao: Bad reputation, time is running out, no one is willing to marry how to break it?
His Royal Highness the Fourth Prince: The martial value is outstanding + the appearance is against the sky, how can no one dare to marry? Wait ten years online! Urgent!
Passionate and arrogant × cold belly, black and handsome story ^^
Whenever Aubei couldn’t stand Xi Ling’s hairy hands and feet, Xi Ling showed his furry tail and ears aggrieved. Well, the fourth prince is a plush control.
(The main attack, the main attack, the main attack in this article) are emphasized three times!
This article is also known as (777 years of high-profile dog abuse) sweet + pet + child + 1 v 1
Background Zerg: male, female, sub-female
Insect species: grass worms, meat worms

Content Labels: Strong and Strong Son Mecha

Search keywords: Protagonist: Xi Ling ┃ Supporting role: Obei ┃ Others: Fess, Xi Feng

- Description from novelbuddy

The youthful Qin Ye was born almost a century ago, but thanks to immortality granted to him by the ‘fungus of aeons’ he can pass for a high schooler.

After receiving his terminal illness diagnosis, Chu Xun could finally let go of everything. The most important thing of being alive is after all, one’s own happiness.

Dumping a jerk, getting back on his retarded colleagues, firing his dumbass boss, staying in a luxurious house, enjoying a feast and bedding a young, energetic and handsome guy—Chu Xun very coolly did what he didn’t dare to do in the past!

All his savings were spent and as he laid down waiting for his death, the doctor apologetically told him, “I’m so sorry, we misdiagnosed.”

“…” Chu Xun felt faint.

He did another checkup and thought, he did feel unwell recently though?

The doctor looked grim.

Chu Xun’s heart skipped a beat. “Don’t tell me it wasn’t a misdiagnosis after all. Am I sick?”

Doctor: “You do not have a terminal illness, but you are… You are pregnant.”

Chu Xun: “???” Ermm, he’s a guy?

And later, the child’s father, that young, energetic and handsome man, who also happened to be a 26-year-old billionaire, Lin Yanchen, appeared and handed out a marriage certificate already signed by him. “I’ll take responsibility. Let’s get married.”

Chu Xun only realised now that his 30-years-late love life, as though blooming blossoms, was flooding in.

- Description from Novelupdates

"When will people understand.... I'm only half insane?"