Kazura is basking in the glow of her very first high school romance - Iwasaki, an adorable guy who adores her. He takes her to see her all-time favorite band perform, and there she crosses paths with the charismatic and handsome singer. However, a startling revelation hits her the next day - her gorgeous new acquaintance is actually her teacher, someone who seems completely unremarkable during daytime hours. Kazura is now in a quandary. Should she tell her boyfriend about her teacher's clandestine identity? And how should she deal with her growing fascination with him?