Third POV
It was in the evening and Zena was making out with all her girls. Making use of her nanomachine body that changeable, she created many hands and D*ck like shapes from her hair to please them. Both Frenda and Saiai officially join her growing harem today and she like their cute expression when she played with them. But, all fun thing has to end because of notification from JARVIS that Touma was about to get himself into trouble. So, she has to watch and the girls follow since they want to see the Magic side of this world though they know that Zena also a Mage.
In another place, Touma was quite unlucky since yesterday. Trying to help a girl from a thug last night and found out the one he saves was Biri Biri and she was pissed at him for taking her prey so she challenges him to a fight. To which he just deflected her attack that was aimed at him, making her further pissed and discharge a large amount of electricity.
Arriving at his apartment he sees that all electronic fried making the night cold and dark. The next morning, he got up to find all his food was wasted. When he was going to air the futon he steps on Yakisoba bread and there's a nun in his balcony to which he saves. But by touching her he destroyed her clothes which were enchanted by magic. Making her angry so she bit his head.
Now, he was in front of his apartment and see the nun from this morning was there with her back bloodied. Thinking it was because of him destroying the magical protection on her clothes, He tried to help.
But, as he was about to bring her to his sister's place since she would know what to do. He was attacked by a red-haired man who calls himself a Magic-user.
"Boy, just leave the girl and go back to your daily life!" the man told him in a condescending way.
"You! Are you the one who does this to Index?" Touma asks with a frown.
"Yeah, usually it was hard to catch her. But, because the walking church seems to be destroyed, she became like that after taking my weak attack!" He says unconcerned that this makes Touma angry at him and at himself since he was the one who destroys the enchantment.
"I see, then I'll defeat you and take her to hospital." he said ready to fight.
"Hmph, just a student living his life carefree. You think you can defeat a magician like me?" he says looking down on him.
"Heh, I'll destroy that fantasy of yours that thought yourself was strong!" he said and they start to fight or it was a beating for Stiyl Magnus as Touma was too strong for him and his magic was useless when fighting someone who can negate it.
After that Touma decides to hide Index at his teacher Tomoe-Sensei's place and left her with Tomoe-Sensei as he goes to deal with the Magicians as he can feel it. He was being watched.
"Come out Magician! I know that you've been watching me since I defeat that redhead!" he shouted out and suddenly the road was silent with no one was there.
"You're quite perceptive for a mere student! My name is Kanzaki Kaori Magic's name is Salvare000, so that you know who defeat you." someone talks and a tall and beautiful girl with quite a strange clothing style with the left leg of her jeans cut so short white shirt tied under her breasts which showed her belly. She held a Nodachi on the left side of her.
"What can I do? I got myself a sister that quite a taskmaster and she won't let me go if I'm not up to her standard and also my name is Kamijou Touma, just a student of a certain hight school." Touma says with a smirk while his right-hand touches a fang-like bracelet on his left hand and activates the Phanter Habit since he doesn't want to test his body against the sword.
"Hmm, is that a science thing that this city was proud of? if so, then it was useless since there is nothing that this Kanzaki can't cut! 'Nanasen!'" she shouts and suddenly an invisible blade comes from seven directions toward Touma.
"Whoah, that dangerous and quite deceptive." Touma exclaimed. "You use the sword as deception while it was a string that attacks me." he said while dodging the strings.
"To find out about my attack from seeing it once. You should be thankful to your sister that trains you." Kanzaki says as she was quite amazed at this high schooler.
"Heh, knowing her I'm sure she's watching us from wherever it is and decided not to interfere so to temper me with danger." Touma said with a resigned sigh.
At the top of the building that's quite afar from Touma, Zena and the girls watch as Touma fights with Kanzaki.
"He knows you quite well!" Brenda says as she still hasn't met with Touma since she joins.
"Heh, I quite make sure to make his remember that even if his memory was lost but his body will remember it hehe." Zena smiled evilly.
"You are quite a sadist toward your brother!" she said again.
"All in the name of his protection." Zena answers and continues to observe the fight.
Back with Touma.
"Like a lion that pushes its cub. She is quite a spartan trainer." she said and start her attack again.
This time Touma gets close to her while dodging the attack. He was fast that even a Saint like her barely blocks his punch. And she has to take a few steps back from the force.
"Ugh, What the hell is your sister do to you that you can match the power of a Saint?" she asks, quite shocked while trying to get a feel of her numb hand.
"She trains me of course since I was six at that. Anyway, what do you people want with Index that you hunt her down like that!" he asks and Kanzaki frown.
"You don't know that she was the holder 103000 grimoires inside that head of her?" she asks Touma.
"Of course I know! She told me that, and my sister already teach me about the magic side that I know what her value is! What I want to know is, why both you and that redhead hint them when it's clear you hurt yourself doing this?" Touma asks and Kanzaki was shocked and lose her composure that she attacks Touma indiscriminately from being read like an open book.
"What did you know? If we didn't do it she will die because of the overload of memory that we have to wipe her head off periodically!"
"Huh? Wait wait wait! What do you mean by that?"
"It just the way I say, with her having 103000 Grimoire inside her head her memory capacity can only hold for a year before she has to have her mind wiped of her one-year memories!"
"Ehh? Are you stupid or what? Human brain is not that fragile that a few years of memory will overload it. My sister said that even if you have photographic memories, the human brain can store data for a few hundred years of their life!"
"Then why that she would suffer every year like she was dying?" Kanzaki shouts as she was distraught.
"Who is it that told you that Index has to be mind-wiped periodically? Who is it that will be troubled if Index did not get her mind erased? I think you know the answer!" Touma said and Kanzaki was at a loss from the revelation.
"I see, so we have been deceived by the Necessarius. But, it was too late! It was today that the time of her periodic mind wiped." Stiyl Magnus appears as he said that.
"What? Damn it!" Touma shouts and starts to run toward Komoe-sensei's place. Stiyl and Kanzaki look at each other and follow after him.
With Zena
"You won't help him at all?" whispered Kanade as they watch Touma and the two Magician leave while following them.
"I will just rescue him when the dragon breath was about to touch him and erases his memory! Tri Diagram has to be destroyed so many of Academy City project gets on hold from the inconvenience of not having it." Zena says with a smirk and uses Geppo to follow after the three.