Shounen Ai, Yaoi with children

We can still become mates, even now."
A younger alpha chases after a single omega on the run.

Oto is a hotel employee who works while raising his son, Akane.
Oto's pheromones are so weak that alphas don't notice him, but he can't forget Shuga, the only alpha who ever saw through his omega identity and with whom he had a relationship.
He found out he was pregnant after they broke up, so he couldn't tell Shuga about Akane. He knew from the beginning that he and Shuga could never become mates, and

Born as an orphan, National figure skater Yi-rim, has always craved for someone to protect him by his side, until his encounter with National swimmer Chong-ho... Chong-ho, an Alpha with high sensitivity for pheromones and Yi-rim, an omega with scentless pheromone! Is this encounter fated, or just a coincidence...?
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Dilya, let's become family."

Dilya, a mercenary who does not know anything about family or love, spends a night with the King of the Golden Wolf Clan, the enemy kingdom.

Supposed to assassinate the king, he instead receives so much love that he finds it hard to leave his side.

6 years later, as he's living and raising the king's child in secret, the envoy of the king's younger brother, Yudha, suddenly comes.

"I have never been loved, so I don't know how to love."

This is when Dilya's lonely

Nijo Arima is an Alpha who works at a first-class company. At night, he pretends to be an omega and his service specializes in serving customers at night. He wants to be an omega at least for a moment; then, when he meets a young famous student entrepreneur, who is arrogant, and throws words that pierced Arima's heart, Arima is in shock and has a one-night-stand with him without knowing that his fate was sealed.