"Kōkō Debut" is a Japanese manga series written and illustrated by Kazune Kawahara. It follows the story of Haruna Nagashiro, a high school girl who is determined to find love. To achieve this, she enlists the help of Yamato Kurosawa, a popular boy at her school, to teach her how to attract a boyfriend. The series explores themes of friendship, romance, and personal growth as Haruna navigates the challenges of high school life. It has been well-received for its relatable characters and humorous situations, making it a favorite among fans of the shōjo genre.