Asuna and Ku Fei entered the winter dimension and as they entered they encountered Chachamaru's face in a portal.
Asuna: (says confused) Chachamaru?
Chachamaru: (says with a smile) Yes it's me.
Ku Fei: (yells dumbfounded) HOLY CRAP! ARE YOU A WIZARD TOO!?
Chachamaru: (says stern) No, Satomi has given me the ability to communicate with portals, especially to keep an eye on my mistress and her daughter on vacations they have.
Asuna: (says with a scared smile) That's reasonable (as she fears what creepy shit Evangeline and Anastasia might do on their vacations.)
Chachamaru: (then says stern) Well then, your mission is to defeat the evil princess and her army of mages and save the young prince she's trying to marry.
Asuna: (asks in a confused and demanding manner) How is saving some prince from an evil princess and an army of mages training?
Asuna then got her answer when she saw an army of Vampire Robots dressed up as Magical Girls.
Asuna: (mutters) Oh.
The Robot Vampires then dashed towards Asuna and Ku Fei as they unleashed magic stars from their wands like guns firing bullets. The magic stars then exploded when they hit the ground which made things more hectic.
Asuna spent most of her time trying to deflect the exploding magic star projectiles with her sword in order to defend Ku Fei from them. Ku Fei then jumped out and kung fu kicked the Vampire robots multiple times in the solar plexus and she punched many of the robots in the faces with the help of Asuna who worked with her to defend her from the robot vampires unleashing exploding stars from their wands.
The two girls then dashed into the castle and they ran through the halls as they had to fight robot vampires who have the appearance of handsome vampire dudes wearing the outfits of black knights which they had a hard time doing because the robot vampire dudes were attacking the two girls with lightsabers and electric shields. The girls were able to overcome fighting the robot vampire knights and they were able to enter the throne room of the castle.
Sitting on the throne was a robot vampire that looks like Ayaka Yukihiro wearing the outfit of an evil princess from an Anime Sci-Fi Fantasy show and she was grasping a strand of the ropes tied around a robot vampire boy who looks like Negi wearing the outfit of a little boy prince who was crying and screaming for help. Asuna witnessing this had realized why this was their mission, it was because Evangeline or Chachamaru somehow knew Asuna's desire to protect Negi from Ayaka so Negi can have the freedom to decide who he wants to fall in love with and to prevent Ayaka from being called "Cradle Robber" or become a pedophile.
Asuna charges toward the evil princess robot vampire, only for her pactio to wear off and her to get tired and hungry. Asuna despite that kept on going until she saved the robot Vampire boy from the Robot Vampire that looks like Ayaka. Asuna after saving the robot vampire boy then dashed to see if Ku Fei was okay, only to find Ku Fei's pactio to have worn off as she was tired, hungry and she was about to be attacked by Vampire robots. Asuna then dashed to save Ku Fei and ran off with her and the Prince.
They then ran through the castle as they were being chased by the Vampire robots and they were finally able to escape the winter dimension through the magic door. The others were glad they survived, but they were confused about why they arrived with a robot vampire that looks like Negi.
Setsuna: (asks confused) Why is there a robot vampire that looks like Negi wearing the costume of a boy prince?
Asuna: (says irritated) Simple, our mission was to rescue him from a bunch of robot vampires.
Konoka: (says bumbed) And it looks like you and Ku Fei are the only duo that has completed your mission.
Asuna: (asks confused) Why do you say that?
Kaede: (says grim) Setsuna and I were supposed to defeat our enemies in a stealthy manner in order to test our stealth, but we both made the mistake of sneaking into the mansion in the guise of the enemy which resulted in one of the enemies spotting us and we had to run.
Chao: (says sad) We had to forfeit the training session because one of the enemies injured Konoka.
Asuna: (says with pride) Well we succeeded with our training mission (says with a groan) even though it was hard.
Setsuna: (asks confused and stern) Cool, but what was your mission and why is there a robot vampire that looks like Professor Negi?
Asuna: (says with a smile) Me and Ku Fei were tasked to save the Robot Vampire Negi whom Chachamaru here has designated as the Prince from an army of evil robot vampires led by a robot vampire that's an evil Princess.
Chachamaru: (says with a smile) Yes and you have achieved the mission, but you might want to allow me to send the Prince back into the dimension.
Asuna after hearing Chachamaru say that was ridiculed and angry.
Asuna: (snaps angrily) Are you serious! You want me to surrender the Robot Vampire Negi to you just to send him back to the robot Vampire.
Chachamaru: (says stern) Asuna, it's only a robot Vampire.
Asuna: (snaps) Yeah, but he should remain free to live the life of a normal boy, plus returning him to that Evil Princess will make the mission we successfully completed pointless.
Konoka: (says upset) Asuna, that was a training session, plus you're kind of obsessive for a robot vampire.
Asuna was about to protest, but the robot vampire then attacked her by kicking her in the face and grabbing her pigtails. The others then jumped in to save Asuna as she was fighting off the robot vampire boy. Setsuna then tried to strike the metal menace with her sword, but the metal menace countered the attack by biting Setsuna's sword. Kaede then grabbed a bow staff as she then charged towards the thing and Ku Fei and Chao both joined her in the attack. However the robot Vampire then turned the tables on the girls as a gun popped out of its butt and the gun started firing lasers at the girls.
Ku Fei: (screams severely confused) WHAT THE HELL IS GOING ON!?
Chachamaru: (says stern) If a robot vampire is removed from his dimension, then its mindset will be corrupted and it will cause destruction wherever it goes.
Setsuna: (snaps pissed) Somebody should have told that to Asuna, that way we won't have to deal with that monstrosity!
Asuna: (snaps pissed) YOU IDIOT! I WAS SAVING THAT LITTLE BOY PRINCE FROM THE EVIL CRADLE ROBBER!
Setsuna: (snaps sarcastically) Well good job, (then snaps mad) because now we're about to be killed by "Little Boy Prince".
Asuna: (snaps pissed) WELL I'D RATHER HIM BE FREE THAN BE TRAPPED IN THAT DIMENSION WITH THE CRADLE ROBBER!
Konoka after hearing that then realized that the Prince looked like a Robot Vampire clone of Negi and that Asuna could have dealt with a Robot Vampire who looked like Ayaka, Asuna's childhood friend/rival who is the class representative and someone who is severely obsessed with Negi according to Asuna. Konoka after this decided to solemnly speak to Asuna in order to get her to allow Chachamaru to return the robot vampire to his dimension.
Konoka: (says solemnly to Asuna) Asuna, I know why you saved the robot boy and it's because you see him as Negi.
Asuna: (protests) I know and I wanna help him escape from here so he can be free and live the life of a normal boy and not be the plaything of some evil princess.
Konoka: (says solemnly) Asuna, it was only a training mission, you have to let Chachamaru bring him back to his dimension or he would destroy everything in its path.
Asuna was about to protest, but she realized that Konoka and the others were right as the robot prince is only a robot and it needs to go and two, her obsession over the robot is similar to that of Ayaka's obsession for Negi. Asuna then helped her partners defeat the robot and she gave it to Chachamaru who then threw the robot boy back to his dimension. Asuna felt bad that she let her obsession in helping the robot boy live a normal life take hold of her, especially due to the fact that it attacked her friends.
The gang then decided to recover from the attack as they then prepared to enter the summer dimension.