Arisa, a reformed delinquent known as a 'yankee,' transforms herself to catch the eye of Ren, a diligent student. After her persistent endeavors, Ren eventually asks her out. Despite her joy of having a boyfriend, Arisa finds herself strangely fixated on Issei, her neighbor. When Issei compels Arisa to become the main vocalist for his band, she faces a crucial choice: between Ren and Issei, where does her true place lie?