The numbers the author picked are kind of weird. Like she makes ¥500k a month and has enough power to just get him fired but 500k is only $5k usd which is $60k a year. That's not a lot of money, a single person can live off of it especially in a non expensive area but it's not the kind of money you could just flex. If this story took place in the bay area or nyc she would be considered poor.