Douluo Dalu 2: The True God King - Chapter 15: [DD2]:

The Old Gods are gone. Lost and Forgotten, their honor shattered and their kingdoms broken by treachery.The Peace of the Myriad Heavens has been severed. And from the ashes of war and chaos, the Twin Towers of Babel have been created as a beacon of hope.Can Altair, a child born of the Old Gods whose name has long since been forgotten, survive, or will he be cast into the Nine Hells?***“So...” Arsene continued, enjoying his child's flush expression. “I've got a few things to teach you. What I'm about to give you is some peak wisdom. Think of it as my Ten Commandments: One, never trust a bitch with red hair. Trust me on this. Two, the pull-out game is not a real thing. She will get pregnant. Three—”“F-Father…”“ —Never get yourself more than one wife. It sounds fun. It is fun. But it's truly a nightmare. You better be writing this stuff down. This is some grade-A wisdom right here. Four.“...Please stop talking…” The Prince pleaded.“Shhhhh. Just let this happen. Four…Bro's before hoes isn't a thing. The hoes come first. Remember, Booty is more important than Wa— ”“STOP!!!!!”

In Ten Heavens Domain, full of respected powerhouses, juvenile Ling Tian accidentally obtained a mysterious iron sword. He refined the Supreme Martial Dao, studied the Divine Spirit Array Laws, fought Ten Thousand proud and arrogant Heavenly Clans, and was undefeated! Seven Feet Sword Tip sweeps away the world, within the Ten Heavens, I am the Supreme God Monarch!

- Description from Novelupdates

He was the Son of Dragon!

However, he was titled as the ‘Sinned Prince’ when he killed his mother.

She was supposed to marry her childhood lover but stepped forward to marry the Sinned Prince, whom every woman from the noble families has rejected.

With one motto in her mind— ‘To end the Qiu Royal Family.’

~~~~~

Qiu Lóng Wei is the youngest prince of the Qiu Kingdom. He was prophesied as the Son of Dragon, but his acts made him the Sinned Prince.

Xu Li Hua, the daughter of a Low-rank official, was forced to leave her town when her family was massacred on one deadly night.

The gentle and petite woman, who hardly has seen the world, enters the most dangerous place where a small mistake can take her to the door of death and get entangled with Lóng Wei.

~~~~~

Li Hua fell on the mattress while Lóng Wei hovered over her.

.....

“Whose ring is this?” Lóng Wei asked, looking at the red jade ring on her finger.

His palm went on her nape, and he pulled her face up, forcing her to look at him.

Li Hua pulled her hand back, but Lóng Wei didn’t let it go. Instead, he took out the ring from her finger.

“You are my official wife now. In your life only one man shall exist, and that’s me!” Lóng Wei authorized, clenching his fist which was holding the jade ring.

“The Prince cannot force his decision on me. Even if he takes my body, he can never take my heart,” Li Hua said, with a stern tone.

Lóng Wei clicked his tongue and twisted his lips into a smirk.

“Watch your words, Li Hua. Not only your body will be mine but your heart and soul too. I go crazy for the things that are precious to me. You are my wife, so my craziness for you is beyond description.”

[Power System has beautiful Waifus as his spirits.]

[Read for the great plot and a perfect HAREM. There will be SMUT chapters only when required. The protagonist isn't Naive and treats his woman with care.]

[Read only if you want a great plot, sweet romance, a perfect harem, and good smut without any forced development.]

[Story would make sense as you progress I have avoided info dump and explained in a natural way to answer each question through the characters.]

*Ding!*

[Dual Cultivation System installed]

…

Yue Yan Gets kidnapped by the goddess on his sweet night with his girlfriend. She asks him to help her on a mission against the XieLong temple but he turns her down.

Later, some mysteries reveal their past and Yue Yan agrees to help her in order to meet his Bing'er again who has also been sent to the new world.

When he transmigrates into the body of Meng Long, he finds out he has a special Physique, the Supreme Yang body that stops his growth in Cultivation unless he Dual-Cultivates with a woman.

Yue Yan's new family had mistreated his predecessor Meng Long so he decides to leave the clan to embark on a new path with his beautiful concubine Xue Rou.

Join Yue Yan AKA Meng Long, in his Journey to reach the pinnacle of the world.