Daydreamy Iroha is too shy and anxious to speak with her high school classmates, finding refuge from her social awkwardness by sitting alone outside and confiding in a handsome upperclassman named Sou, whom she met at the library. Sou is always encouraging and supportive, making him feel like a dream come true for the isolated girl. The story is set in a contemporary Japanese high school where Iroha secretly maintains this connection, until a boy from her own class discovers the truth she has been hiding from everyone else. This discovery forces Iroha to confront the nature of her relationship with Sou, questioning whether he represents a genuine emotional connection or merely an illusory escape from her loneliness. As the narrative unfolds, the boundaries between fantasy and reality blur, challenging Iroha to step out of her safe daydreams and face the complexities of real-world relationships and self-acceptance.