Ep. 19: Kazumi investigates the unseen classmate Sayo Aisaka, who is revealed to be a ghost from the 1940s.
Aired on May 11, 2005

19
Kazumi begins an investigation into a classmate named Sayo Aisaka, who appears to be completely unnoticed by everyone, including Kazumi herself. The investigation reveals that Sayo was actually a student at Mahora Academy during the 1940s and is now a ghost. This discovery explains why she remains invisible to the living students around her. The narrative focuses on Kazumi's efforts to uncover the truth behind Sayo's existence and her connection to the past. The story highlights the mystery surrounding Sayo's presence and the realization that she is no longer alive.
Episodes
- Ep. 15 · Ayaka welcomes Negi and classmates to her family estate during summer break
- Ep. 16 · Negi and students engage in a pillow fight at Mahora's old elementary school to mark the end of summer break.
- Ep. 17 · Yue provides amusement park tickets to facilitate a date between Nodoka and Negi
- Ep. 18 · Negi contemplates Nodoka's confession while Asuna bakes a cake for Professor Takahata's birthday
- Ep. 19 · Kazumi investigates the unseen classmate Sayo Aisaka, who is revealed to be a ghost from the 1940s.
- Ep. 20 · The group travels to Kyoto while a dangerous mage faction targets Konoka.
- Ep. 21 · Negi, Asuna, and Setsuna attempt to rescue the endangered Konoka
- Ep. 22 · Negi seeks magical instruction from Evangeline while Asuna feels sorrow over Takahata and Shizuna
- Ep. 23 · Asuna recalls her past and Negi plans a surprise birthday party for her.