"Okay, Konoka-san, try again," Negi said, encouraging his student in the exercise she was attempting.
"Okay, um, Practe Bigi Nar", she said, as the practice wand she was holding started to glow. "Inficio Vita!"
A glowing orange bolt shot out, striking the door in front of her, but nothing happened.
"Sensei, is this really necessary?" Asked Setsuna, who was observing from the back of the room. "Ojousama is already proficient in healing magic."
"Yes, but she can do so much more. According to the headmaster, her magic potential is greater than even my father's."
"I'm sorry, Negi-sensei, I'm just no good at this," Konoka said, as her face fell and she looked at the floor somberly.
"That's not true, Konoka-san! I know you can do it, just give it one more try."
"Well, okay, Negi-sensei, if you really think I can." She brightened up and, with renewed vigor, started concentrating as hard as she could.
"Pract Bigi Nar!" She announced assertively, aiming her wand once again at the door. However, just at that moment it opened, as a green-haired girl with unusual ears entered the room.
"Excuse me, Ne-" the newcome began, but was cut off.
"Inficio Vita!" Konoka yelled the encantation before she had time to realize what was happening. An incredibly bright, glowing bolt of energy struck Chachamaru Karakuri straight in the chest. Her eyes grew wide, and a second or two later, she collapsed on the floor.
The next thing she was aware of was Konoka's voice. "I'm sorry, Chachamaru-san! I didn't mean to!"
She slowly opened her eyes. She was lying on a table in the familiar Mahora Robotics Department laboratory. Surrounding her were the familiar faces of Negi, Konoka, Setsuna, her master Evangeline, and her creator Satomi Hakase.
"Oh, you're awake, thank goodness!" Negi said, sighing in relief. Chachamaru was still confused. The last thing she remembered was master asking her to go tell Negi that she would be skipping class tomorrow, but when she walked in she was immediately hit by a strange spell from Konoka, then she blacked out. Wondering how much time had passed since then, Chachamaru tried to access her internal clock, but found herself unable to. That wasn't the only thing that was wrong - she couldn't access any of her programs at all! She then noticed an odd thumping sound coming from her chest that had never been there before. She realized she was inhaling and exhaling air - breathing? She reached her hands up to her ears, but instead of feeling the familiar robotic devices, her fingers discovered normal human ears.
"What - what happened?" She asked, sitting up slowly.
"I'm sorry, Chachamaru-san!" Konoka yelled again.
"I don't know how," Negi began, "but somehow Konoka-san's spell altered your body. As far as we can tell, you've become - human."