The Delayed High School Life of a Laborer

Facing challenges from a young age, 18-year-old Manami Katagiri had to leave middle school and worked in a factory to support his younger sister. He resolved to improve his situation by returning to high school. However, on his first day, he crosses paths with a self-proclaimed "princess" who appears to have never worked a day in her life. Is it love at first sight or the start of a rivalry?