The supporting character's harem is very normal - Chapter 9: Going to the Karol Empire?

After causing a tech disaster in the real world, genius shut-in Rin Katsuro is sentenced by the gods and banished to Ereborn—a realm ruled by chaos, where ancient scripts control magic and dungeons feed on trauma.He wakes up in the body of a legendary war criminal—the Demon King's General—and is mistaken for the adoptive father of a demon princess.Armed with unstable “Error Magic” that lets him rewrite reality like code, Rin doesn’t want to be a hero... but when angels declare war on the demon races, and his daughter calls him “Papa,” he might just rewrite fate itself.This is the story of a broken man with nothing left to live for—until an entire world starts calling him Dad, Demon, and Destiny.

The engagement of the most adored daughter of the Li Family was broken off. Her furious family members railed against the heartless man and vowed to make him pay the price. * Later on, Li Qiao met her ex-fiancé’s big brother by chance. Some said he was the most mysterious man in Nanyang and his name was Shang Yu, aka Shang Shaoyan. While some others called him the overbearing and obsessive underground Overlord of Nanyang from whom everyone should stay away. Standing in the misty rain, Li Qiao gazed at the ruthless and untamed man with a shallow smile, said, “Hello, I’m Li Qiao.” She would become her ex-fiancé’s sister-in-law, if not wife. * Li Qiao and her ex-fiancé met again on the street several months later when he sneered at her, “Are you following me? Haven’t you given up hope yet?” A harsh voice berated him from behind, “Show some respect to your sister-in-law!” From now on, only one rumor was circulating in Nanyang City – The merciless Overlord of Nanyang had one woman he uncritically doted on. Her name was Li Qiao.

Sentinel Shou: I have something to confess to you
Guide attack: You can choose the time, now we have just marked the end, no matter what you confess, I have to accept it
Sentinel Shou: Actually, I was reborn
Wizard Gong: Oh, that’s all, then I’ll also confess by the way, I’m from Transmigration
Sentinel Shou: Huh?
Dao Gong: The world we live in is actually a book, you are the villain, I am the cannon fodder, the book is here, read it for yourself
Sentinel Shou: … (reading through) Oh, this is my second generation… Tsk, the x-star rebels are really trash, and they can still be suppressed like this; country y’s ** is too useless, a good hand can be played Messy; is there a hole in the head of the Z star thief group, and betrayed for love?
Guide Attack: Actually not just reborn?
Sentinel Shou: Now this is the third life, I didn’t expect to be reborn, and I didn’t expect to meet you in luck——
Guide Attack: How did you meet me?
Sentinel Shou: Since I met you, I decided to…reform you
Gong Chuan has become a cannon fodder guide who loves vanity and spare tires in the book. In the near future, his glands will be destroyed by people because of love and hatred.
However, the most terrifying thing is that he turned out to be the only guide with a compatibility level of 60%, the most terrifying villain in the book, the Sentinel.
Gong: Wait, the book didn’t mention it, didn’t this sentinel die because he didn’t meet the minimum compatibility with his guide!
Villain Sentinel: Doesn’t that mean you’re here for me? I’m very happy to let go of this planet for now.
Attack: …

Note 1: Always 1v1
Note 2: Although the attacker is a guide, his physique is comparable to that of an ordinary sentinel. The specific reasons are explained in the text
Note 3: There are two sets, many two sets, atypical sentry guides
Note 4: If you don’t like to cross, don’t leave an impassioned long paper

Content tags: strong interstellar sweet text through the book
Search keywords: Protagonist: Cen Zhen, Lian Yu ┃ Supporting role: ┃ Others: Sentinel guide, Xiangshao
One-sentence introduction: Did the sentinel cross?
Concept: The person who belongs to you will find you even if it spans the entire time and space

- Description from novelbuddy

The Laughing Demon, Zǔ Zhòu, who had plunged the Nine Heavens into despair, met his demise by defying the Laws of the Dao. However, fate intervened. Transmigrated into a new body millions of years later, with his forbidden bloodline still bound to his soul, he seeks to live this new life as he did before, stopping at nothing, even if it means destroying the Heavenly Dao itself!