The Beauty (Yandere x Married reader)

She was beautiful, and she found a husband to love her for not her looks. He has made her happier than anyone and when he proposed, she cried tears of happiness. She has never felt lonely again with him around. They found a place where they would have children together and two years later, a bundle of joy came along, and was their long awaited child. They had really good paying jobs as office workers in Osaka, Japan, but (Y/N)'s co-worker, Yoshiro became obsessed with her on his first day. What will happen when (Y/N) says she's married?