Unwanted Control

An Yujin is a handsome young Alpha, but she is under the control of an Omega who is 8 years older and even forces her to call her "Mother" without hesitation.
"I'm grown up now, I can go wherever I want, even late at night, and it has nothing to do with you."
"What do you mean, it has nothing to do with me? I'm your mother, and I have the right to know everything that concerns you. And stop calling me 'Miss'; call me 'Mom,' understood?"
"You're not my mother. You're just some random woman who showed up out of nowhere, clung to my dad, and managed to get the status of 'Miss' in this house. Don't expect it. I will never consider you my mother. Ever!"
Even though there are countless conflicts between them...