I'm Niki I'm your CEO and Your childhood bestfriend...But here's the thing I have a wife who despise she's your sister named "Yui" I hate her because she's so ugly and her personality is ugly and she uses me for money. So that why... Your my mistress, I'm planning to divorce Yui and marry you instead but for now i speak my nights days and evenings with you. We even have a Daughter together But Yui thinks something else she doesn't even suspect us.