Ep. 19: Accelerator meets Last Order, the final clone, who reveals her role in the Sister experiment.
Aired on February 12, 2009

Accelerator encounters Last Order, identified as the final clone of Misaka Mikoto. She explains the unique function she served within the Sister experiment framework. Following this revelation, Accelerator discovers the necessary actions required to ensure Last Order's safety. The narrative focuses on the interaction between these two characters and the subsequent realization of protective measures needed for the young girl. This segment concludes the arc by addressing the aftermath of the experiments and the immediate concerns for Last Order's well-being under Accelerator's care.
Episodes
- Ep. 15 · Kamijou encounters Russian sorcerer Misha at a beach resort before learning about the Angel Fall spell
- Ep. 16 · Kamijou and Tsuchimikado investigate Touya's link to the Angel Fall spell.
- Ep. 17 · Kanzaki orders Kamijou and Touya to destroy the ritual site after Misha's true identity is revealed.
- Ep. 18 · Misaka asks Kamijou to pretend to be her boyfriend to avoid Unabara's attention
- Ep. 19 · Accelerator meets Last Order, the final clone, who reveals her role in the Sister experiment.
- Ep. 20 · Accelerator rescues Last Order from brain virus while facing Amai's attack
- Ep. 21 · A New Transfer Student Arrives as Magical Energy Is Detected in Academy City
- Ep. 22 · Sorcerer Sherry Cromwell arrives in Academy City with plans to destroy Kazakiri, prompting Kamijou to intervene.
- Ep. 23 · Kazakiri Seeks Revenge on Ellis After Her Secret Is Exposed to Kamijou and Sherry