"Yamada-kun and the Seven Witches" is a Japanese manga series written by Miki Yoshikawa. It follows Ryuu Yamada, a high school student who discovers he can switch bodies with others through a kiss. This ability leads him to uncover the secrets of the Seven Witches, a group of girls at his school with unique powers. The story combines elements of romance, comedy, and supernatural themes. As Yamada navigates his new abilities, he forms friendships and faces challenges, all while trying to understand the mysteries surrounding the witches and their powers.