"Mahō Sensei Negima!: Mō Hitotsu no Sekai - Extra Mahō Shōjo Yue" is a four-episode OVA series that serves as a continuation and alternate retelling of the original "Mahō Sensei Negima!" story. The narrative centers on Yue Ayase, a studious and reserved girl who is one of the students in Negi Springfield's class at Mahora Academy. Negi, a ten-year-old wizard from Wales, is tasked with teaching the class while secretly searching for his father, the legendary mage Nagi Springfield. In this alternate storyline, Yue becomes the focal point as she gains magical powers and transforms into a magical girl, a departure from her original role in the main series.

The plot begins with Yue discovering a mysterious artifact that grants her magical abilities, thrusting her into a world of supernatural battles and responsibilities. As she grapples with her new powers, Yue must confront the challenges of balancing her ordinary life with her newfound role as a magical girl. The story introduces a parallel world where magical threats emerge, and Yue, alongside her classmates, must protect both worlds from destruction. The OVA explores themes of self-discovery, friendship, and the burden of power, as Yue learns to navigate her dual identity and the expectations placed upon her.

Key characters include Negi Springfield, whose guidance and magical expertise remain pivotal, and Yue's classmates, who provide support and camaraderie. The OVA delves deeper into Yue's character, highlighting her intelligence, determination, and internal struggles as she adapts to her transformation. The narrative also incorporates elements of action, humor, and emotional depth, staying true to the tone of the original series while offering a fresh perspective through Yue's journey. The alternate world setting allows for creative storytelling, blending familiar characters with new dynamics and challenges, making it a unique addition to the "Mahō Sensei Negima!" universe.