I am, Flame-Chaser of Previous Era - Chapter 11: Heaven-Opening

Accidentally entered an ABO novel, and before Mu Er realized that he had an extra organ, he was confused and completed the first great harmony in his life with an Omega.
But when he woke up, the man had disappeared, and Mu Er thought it was just a dream.
Unexpectedly, a few months later, when Jiyou was pointing at the handsome face of the man in the news to her excitedly praising the most outstanding Omega on the planet, she was suddenly tied to that man.
Mu Er was nervous and puzzled, she asked, “Sir, you…”
The man unbuttoned his suit, pointed at his slightly long belly, his face flushed, and he said to her, “responsible.”

(Privately set like a mountain) (O pet A) (Mines clearance: the author’s female lead)
One sentence introduction: Mr. Ba came to me with the ball to take charge
Purpose: Life is precious, and we must be responsible for it.

Content tags: childbirth sweet text through books
Search keywords: protagonist: ┃ supporting role: ┃ others:

- Description from novelbuddy

Chen Yan travels between worlds, ending up becoming an honorable prince in a medieval fantasy world. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land.

Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders coming from the realm of evil.

- Description from Novelupdates

The notorious firearms crime lord Chen Zhang An a.k.a Old Fox was placed under house arrest by the very successor he groomed.

Many people wish to become a character in a novel they like. Side characters are the best ones to reincarnate as. And Ceaser was the same. However, the problem is, the person he reborn as, was supposed to die at that time when Ceaser appears in the fantasy world. The childhood friend of the main heroine, who was supposed to be a stepping stone for the main lead so she can grow stronger. However, now that Ceaser was in that person’s body, naturally, he couldn’t let himself get killed just after rebirth. But what consequences will he bring by staying alive? And what awaits near the end of this story, about which even Ceaser is unaware?