"Shugo Chara!" is a Japanese manga and anime series created by Peach-Pit. It follows a young girl named Amu Hinamori, who discovers three magical eggs called Chara Eggs. Each egg hatches into a Chara, which represents different aspects of her personality and helps her navigate challenges in her life. The story revolves around Amu's adventures as she transforms with her Chara into various forms, gaining new abilities. She also encounters the Humpty Lock and the Chara Change concept, which allows her to unlock her true self. The series explores themes of identity, friendship, and self-discovery.