"Shugo Chara! Doki" is the second season of the anime series "Shugo Chara!" It continues the story of Amu Hinamori, a middle school girl who discovers her Chara eggs, which represent her hidden dreams and personalities. With the help of her Chara companions, she faces challenges and learns more about herself while navigating friendships and school life. In this season, Amu and her friends, including Ikuto Tsukiyomi and the Guardian Characters, confront new threats from the Humpty Lock and the Easter Company. The series explores themes of self-discovery, friendship, and the importance of embracing one's true self.