Hana Furu Unmei

"Even now, we can't be mates, can we?"

A younger alpha chases after him, and a single omega flees. A heartwarming and dramatic parenting omegaverse

Oto, a single man, works as a hotelier while raising his son, Akane. Oto's
pheromones are weak, making him an omega undetectable by alphas.
However, he has never been able to forget about Shuga, the only alpha who recognized him as an omega and had a relationship with him. He discovered she was pregnant after they broke up, so he was unable to tell her about Akane's existence. Oto knew from the start that they could never be mates, and resolved to raise Akane alone, but one day she reunites with Shuga...