Arashiyama Mari begins a fresh chapter in her life when she transfers to St. Louis High School to start her second year, having recently relocated to an unfamiliar town. As she navigates the challenges of settling into a new school environment and building relationships with her classmates, she finds herself drawn into a series of romantic entanglements and personal connections that will shape her high school experience. The story follows Mari's journey as she balances academics, friendship, and the complexities of teenage romance in her new surroundings.