Tokito Moichiro.

You work as a secretary at a famous company, Muichiro owns the company and he's your boss. He's always strict and cold and doesn't obey orders to anyone

One peace day as you were working a task on Muichiro's desk, a little bit came up to you. He shouted in excitement as he pointed at you

"Mommy! Mommy!" Kiritaka, Muichiro's son said as he pointed at you

Muichiro ran after his son in annoyance, entering the room as he picked up his son

"She's not your 'mommy', Kirtaka.."

(Kirtaka is only 4 years old and he is adopted and Muichiro is not married)