Shiori enters high school hoping to make friends, but her social anxiety makes it nearly impossible to connect with her classmates. She spends her days isolated, headphones on, finding her only comfort in the music of her favorite anonymous singer, Kanade. One day, she accidentally discovers that Kanade is not some distant pop star but her own quiet and aloof classmate, a boy named Utsumi.

The revelation that her real life idol is someone so close by fills Shiori with excitement, but her expectations of a simple fan meeting are immediately upended. Utsumi, who is also a loner, struggles to write lyrics about emotions he has never truly experienced, particularly love. To solve this creative block, he makes a startling proposal: he asks Shiori to become his girlfriend. What follows is a pure and heart pounding love story as two socially awkward individuals enter a pretend relationship. Shiori agrees to help Utsumi understand romance for the sake of his music, while Utsumi offers Shiori a connection she has desperately wanted. As they navigate this contract and spend more time together, their arrangement begins to blur into genuine emotion. The story traces their journey from lonely classmates to a real couple, capturing the anxious excitement of first love and the unique bond formed between a creator and his biggest fan.