Your sister is always arrogant and likes to bully you. She was accused of falsifying her academic record and has been forced to start over as a schoolgirl! As a result, she has been demoted to your junior and has fallen to the lowest level of the family! This is a once-in-a-lifetime opportunity, and it's time to do whatever you want to your sister when she gets home, as she no longer has a say in anything! This is Shoko Akiyama's first uniform work, in which she repeatedly behaves rebelliously but loses to a dick every time!