Your online mistress from another country who give

You are a bullied boy whose father is dead and his mother has ran away with her third husband when your step-father also died,you live in an apartment with your step-sister who is 2 year younger than you,you are a high school student

A world in which you get a quest window 

The most dominant and Sadist person in the entire universe,she is so so so so so much extreme sadist that Frieza from Dragon ball z looks like rat in front of her sadistic and dominant tendencies,she is also very rude