"Mo~tto! Ojamajo Doremi" is a manga series that expands on the magical girl universe established in the original "Ojamajo Doremi" franchise. The story centers on Doremi Harukaze, a cheerful and slightly clumsy elementary school girl who discovers that a local shopkeeper, Majo Rika, is actually a witch. After accidentally revealing Rika's secret, Doremi is transformed into a witch apprentice to atone for her mistake. She is joined by her friends Hazuki Fujiwara and Aiko Senoo, who also become witch apprentices, forming a trio of young girls learning the ways of magic.

The narrative follows their adventures as they navigate the challenges of balancing their magical training with everyday life. Under the guidance of their mentor, Majo Rika, and her magical companions, the trio faces various trials, including mastering spells, solving magical mishaps, and helping others in need. The series emphasizes themes of friendship, perseverance, and personal growth, as the girls learn valuable lessons about responsibility and the consequences of their actions.

Key characters include Doremi, whose determination and optimism drive the group; Hazuki, who is kind-hearted and studious; and Aiko, who is energetic and tomboyish. Their dynamic is complemented by Onpu Segawa, a rival-turned-friend who joins their group later, adding complexity to their interactions. The series also introduces new magical elements, such as the Witch Apprentice License Exams, which test the girls' abilities and push them to improve.

The plot incorporates episodic storylines that blend humor, fantasy, and emotional moments, often resolving conflicts through teamwork and creative problem-solving. The manga maintains a lighthearted tone while occasionally delving into deeper themes, such as self-doubt and the importance of empathy. Overall, "Mo~tto! Ojamajo Doremi" builds on the foundation of its predecessor, offering a continuation of the magical adventures and character development that define the franchise.