Nana falls in love with Haruki, her class's new homeroom teacher. One day, she accidentally discovers a photo of Haruki with an unknown woman and realizes her teacher is a lesbian. Shaken and conflicted, Nana confronts Haruki in an empty infirmary, pouring out her deepest feelings. Amidst the quiet room, her pure love and honest determination intertwine, making every word feel deeper and more intense.