Pregnant with My Childhood Friend's Baby on the First Day of Differentiation

[Stockpiling chapters like crazy, expected to launch in October]

Yan Chu had just woken up from his sweltering, unbearable differentiation period when he realized he was in an unfamiliar place. Turning his head, he saw a photo of Song Chengyu on the bedside table. He was wearing loungewear and smiling warmly.

It was so eerie that Yan Chu might as well have sprinkled rice to ward off evil spirits. Fuming, he called a car and headed home.

But instead of welcoming him, his parents said...

Yan Chu's mother: Where's Chengyu? Why didn't he come back with you? You're pregnant now, so you need to be careful.

Yan Chu: What! Pregnant!

Cool guy Yan Chu could no longer keep a straight face. He shouted, "I just differentiated! How could I possibly be pregnant?"

Yan Chu's mother: ??

Song Chengyu, who was usually calm and rational, hurried over to the Yan family home. After quickly greeting his father- and mother-in-law, he took Yan Chu and left.

Song Chengyu was a child of heaven, the kind of kid everyone else's parents pointed to as an example. He was handsome, got excellent grades, and was even a high-level Alpha. But in Yan Chu's eyes, he was nothing but a poser.

They were childhood friends, and also sworn rivals.

Yan Chu thought it was infuriating that Song Chengyu was taller than him, always took first place on the podium, differentiated before him, and was a high-level Alpha. How could he possibly marry Song Chengyu, let alone get pregnant with his child!

Then Song Chengyu showed him their marriage certificate, their wedding photos, and a promise Yan Chu had written.

Wait, why was Song Chengyu's smile on the marriage certificate wider than his?

Yan Chu: With handwriting this squiggly, are you sure you didn't drug me?

Yan Chu asked other people to confirm, only to get teased for showing off their relationship.

Everyone had thought Song Chengyu hated Yan Chu. Back in school, the two of them were always competing and neither ever gave in. But after they got married, Song Chengyu catered to Yan Chu's every whim.

Yan Chu didn't believe it, but it seemed he really had become Song Chengyu's boss. If he told him to go east, he wouldn't go west. If he told him to stand, he wouldn't sit.

That is, until Yan Chu's heat came. He was suffering and had just picked up a suppressant when Song Chengyu grabbed his hand from behind.

Yan Chu tried to slap him away, but Song Chengyu held him tight. So he'd been putting on an act all along!

Song Chengyu: I'm an Alpha, and I'm the Alpha who marked you!

Reader's Guide:

1. Childbirth

2. Overall lighthearted and slice-of-life, a 100% sweet romance

Blurb written on July 6, 2026

Theme: Free love, a happy life!