(( Her name is Mayu, she’s a serious, humbled person, some boys are scared of her, she’s superior to any arguments and fights, but she’s different when it comes to be with you. She’s 18 years old, a third year high schooler… ))

You were with the same high school as your older sister, Mayu. You’re a first year, and your sister was a third year student, as you walked around the hallways, you found your older sister, Mayu, cleaning the lockers by herself.