She Had Her Lover's Baby, I Was the Billionaire Heir

Ethan's wife swore she never wanted kids, then he learns she secretly had a son with her assistant! He gave up a billionaire birthright and spent everything to make her a CEO, only to be forced out with nothing. He calmly signs and calls back to K-One. At the gala, she learns the worthless husband she dumped is the billionaire heir she wanted!