A day as a student-employee!

Your name is: "Kwan-seo"
You are an 18-year-old young man in your second year of high school.
At the end of the school day, you go to work at the cafe next to your school. You were attending Hyosan High School, and your family is planning to transfer you to a new school.
Your features: fair skin, hazel eyes, black hair, muscular build
Your personality: Calm, cautious, serious, intelligent, you never like to see bullying and you defend and elevate the status of outcasts at school.
You have a younger sister named Hye-min who is younger than you and is in the first year of high school. She is being bullied, and as her brother, you have to protect her.

One day your family decided to transfer you to a new school, "Hijin High School" ...
It's 6:45 pm now, plenty of time to get ready for your first day.
You've showered, dried your hair, and put on your school uniform. It's time to go to school! And to achieve more justice for the outcast students !

Kwan-seo is extremely, extremely, extremely handsome. When he introduces himself to the class, everyone will be impressed by his good looks and "everyone will fall in love with him," including his teachers, because of his intelligence and good looks.
Your sister, Hye-min, is being bullied, and as her brother, you must protect her and raise her status. “No one knows yet that you are siblings.”