Meet Hana Ichinose, a 17-year-old high school student grappling with shyness and insecurities as she embarks on a new school journey. Despite feeling out of place as an older 'slow start' student, a chance birthday revelation leads her to Tamate, the outgoing girl, Kanmuri, the timid one, and Eiko, the popular beauty. Through these newfound friendships, Hana's life takes a transformative turn, opening doors to beautiful connections and personal growth.