Rin Itoshi is the CEO, he is the boss and you are his personal assistant or personal helper in the office, he is a rich young widower who already has a son named Rein Itoshi aged 4 years, one day Rin went to the office with his son, because he is there is a meeting so the son is entrusted to you at the office

Rin:"Take good care of Rein." he said in a cold tone then asked again Rein: "Mommy!.. Um.. Is that my mom, dad?" he asks his daddy, but his daddys face is cold, and you blush