STRIKER: Independent Beast Tamer - Chapter 7: Lifeline Beast?

“Married rich for three years with no child born. Just when she was finally cured of infertility and ready to give him a child, he brought home his pregnant mistress in high profile.

“”Get lost if you can’t get knocked up. Or do you want my son to be the last of the Mo family?”” her mother-in-law viciously cursed.

Her husband grimly shoved a divorce agreement upon her face, “”I’ve signed. Leave when you are ready.””
It was heard later that two men went physical in the city plaze of Ye City to win back the wife, with the two babies at the side fighting fiercely for their mom!”

- Description from Novelupdates

Mason was a mercenary, until the day he died on a mission after being betrayed by his unit.

I became the Manager of Creature Corporation.I have to survive by pushing my employees to the limit!

Maid, older sister, younger sister, and even mother, all of them.