Hello everyone, sorry I haven't update the chapter for a while because I'm feeling lazy and busy at the same time, now I manage to finished it.

Jayasimha: well, I sometime think like that as well, she might be not doing good in the main story of Index, but this is my choice of Kamikoto in this fanfic. I wanna made Ruiko became close to Touma as a friend, not as a lover. She maybe a deadweight at that scene, but let's say that it helped Touma a bit though.

Anime Shipper-345: Haha, I guess I made my writing making Touma and Ruiko act like a sibling lol. But yeah I wanna made Ruiko helped Mikoto get closer of course. I don't know about involving Mikoto as well, but let's see in the future if I could do it as well.

BlueJack22: Lol, I guess he really does influencing Saten even though they just know each other for a few days.

Guest: this fanfic won't be a crossover and I don't even know anything about scarlet nexus at all.


Ep 5: Memory sacrificed.

Ruiko is sitting beside Touma, who has sleep for three straight days. Apparently someone have attacked him four days ago when Touma decide to bring Index to a local bath house, when Index and Ruiko found him, his body was full of scratches with him lying unconscious on the road which surprised them and decide to bring Touma back to Komoe-sensei's dorm.

After a few minutes, Touma slowly opened his eyes as he began to wake up. He looked to the right, he saw Ruiko concernly looked at him.

"Kamijou-san."

"Where am i?"

Touma tried to get up, but he got flinched by the pain on his right arm, "Ouch."

Ruiko tried to hold him, making sure that he won't get hurted way badly, "Don't try push yourself Kamijou-san, you got yourself injured really bad."

As his pain is a bit gone, he noticed a sun rays going inside the apartment which indicate it's already morning, "It's already sunrise, which means it's already the next day."

"You didn't sleep for the whole night." Ruiko told him, which made Touma looked at Ruiko with him got caught off guard, "You have been passed out for three straight days."

"For three days?!" This got Touma surprised, "Why did I sleep for that long?"

Touma then remembered what happened before he passed out, he fight a saint named Kanzaki Kaori and remembered about Index daily memory erasing once a year.

Touma immediately asked Ruiko in worry, "Saten, where is Index now?"

"She's cooking a rice for you in the kitchen."

Hearing this, Touma let out a relief sigh, "Thank goodness, I guess everything is fine for now."

"Don't even say that!"

Ruiko burst out to Touma, "Komoe-sensei found you lying in the middle of the street and carried you all the way back here with you looked injured badly so how come you're calm with this?"

"Saten-"

"I'm worried about you, idiot. You didn't show any sign of you waking up at all for three straight days so how come I should be calm! You've fight a magician without me and Index knowing at all and passed out for three days, so how come you're still looked calm not worrying about yourself?!"

Ruiko eyes started to let out her tears, "I wish I was there with you, so you won't be hurted like this."

It hurted Ruiko to see Touma injured so badly. She sure want to fight back the magician that did this to him, but she's not able to do it because she doesn't have any ability to support her fighting at all, only pure strength and stamina that she has.

Touma know how hurt must it be for Ruiko to be that sad. If the two of them swapped position, Touma might felt the same way because he's not able to protect her at all.

Touma stroke her hair softly as he tried to calm Ruiko down, "I'm sorry for worrying you this badly, it can't be helped as well because those magician all of a sudden ambushed me out of nowhere and I have to fight them whether I liked it or not."

Ruiko tried to calm down for a few minutes. After she calmed down, Ruiko gave Touma a smile, "Please try to be careful when you're on your own okay?"

Touma gave her a nod with a smile covered his face. Suddenly Touma face got paled as he realized, "S-Saten, did you say that Index is cooking right now."

"She is. Something's wrong, Kamijou-san?"

"Ah Touma's awake! Just in time with a meal that I prepared for you." Index finally coming out from the kitchen with Index holding a chopstick and a bowl of rice.

However, Touma have learned about Index's cooking. Index only knew about the basic and was pretty horrible at them. Index have cooked a too soft and watery Rice which made the rice doesn't taste that good, and Ruiko wasn't around him at that time when Index cooked rice on a few days ago so she doesn't have any idea at all.

"Index-san, I appreciate about it, but I'm not hungry at all."

"I am a sister, so I also able to take care of someone who's currently sick." Index told him.

"N-No, could you give me more time to think, God?" Touma replied with his pupils shaking indicate he went into a fear.

"Why? Didn't want to eat at all?"

Index accused. But unfortunately something suddenly broke their stare when the bowl full of rice miraculously slipped from Index's hand and about to fall on Touma's head.

Ruiko realized another misfortune was about to strike Touma. She immediately wrapped her arms around Touma and pulled him towards which made the bowl full of rice landed on the futon instead of his head.

Index got too focused being shocked for what just happened, the bowl almost hit Touma on the head with her clumsiness.

But the good thing is that Touma got saved from the hot, and really wet rice landing on Touma's head.

"Thank goodness that you saved me there, Saten." If she's late for around a second, that bowl would hit Touma.

"Don't worry, i won't let another misfortune hit you now."

As Touma tried to move his head, he noticed something's soft on the right side of his head, "Hmm? What's this soft things on the right side of my head?"

Ruiko eyes widened as she realized what Touma felt. She yelped out in embarrassment and pushed Touma to the side.

Touma got surprised with Ruiko immediately pushed him to the side. When he looked at Ruiko who has a blush on her face with her covering her chest, Touma now realized what touching his right side of his face and blushed as well.

Fortunately the situation broke when someone knocking on the door.

"Coming! Wait, could that be Komoe?"

"What are you doing in front of my house?"

The three of them heard Komoe talking to someone else outside the room.

Komoe-sensei open the door as she told him, "Kamijou-chan. I don't know who these guys are, but it looks like they're a guest to meet you."

When Komoe open the door fully, it reveals two people standing there. Touma, Ruiko, and Index got surprised by the magician is in front of index right now. Ruiko know about the red haired magician that she met when she was about to visit Touma's dorm room, but she didn't know about the woman with a half of the jean's torned.

Touma and Ruiko immediately get up with Ruiko took the baseball bat on her hand as Touma ask, "You two! Why did you come here-"

"Oh…. There's no way you would run away with that boy injured like that."

"So you two are the one who injured him this badly!?" Ruiko asked in anger.

"Stiyl told me about a girl as Kamijou friend and I know for a fact that you're just a normal esper so you don't have any power at all."

Index crossed her arms blocking the magician, "Go away! Please don't hurt Touma again!"

That is what Index beg for the magician, trying to protect Touma who have cared for her ever since they met.


Night had fallen in academy city, Ruiko and Touma sitting beside each other as they watch Index who have apparently collapsed after the magician finally left. The two of them were alone at that time because Komoe-sensei has an errand to be finished that night so that leaves both Touma and Ruiko take care of Komoe's house for now.

The whole time ever since Komoe-sensei leave them to finish her errand, both Touma and Ruiko didn't say a word at all because when Ruiko want to say something, she got reminded that isn't the right time to say anything especially with the situation.

The silence broke when there is a phone call. After Touma digging through the scattered newspapers, Touma located the phone and answered it immediately.

"Yeah. Kanzaki, wasn't it? I'd rather not wake her up. … Why would you go out of your way to tell me your plans? Knowing what to expect will only make it that much easier for me to fight you. … You people are unbelievable. Index is paying the price for your incompetence. I thought you guys do sorcery. Can't you do anything with your magic to help her? She's got 103,000 books in her head. Maybe one of those has the answer. … What are you talking about? … Fine then why not trying to get to them with your own magic. … You knew that and you still let Index memorize them? … Alright then, but what about us? … I'm talking about science. I bet there are any number of ways to erase someone's memory by using science. You said magic can't be used to get to those books, but maybe there's something else that can. This is Academy City, remember? There are plenty of Espers here that know about manipulating the mind. I think it's still too soon to abandon all hope. But maybe you'd rather go for the quick fix you know will work instead of taking on a challenge. Never mind that it's your supposed friend's happiness we're talking about here. … In that case, I don't think we'll ever see eye-to-eye on this. No surprise there. But you should know I'm still gonna fight you no matter what! You should stay out of my way! I don't care what I have to do to you if it means saving her!"

After Touma hung up, he looked at Index again, he declared that he will make sure Index will surely be safe from this daily mind erasing method.

Ruiko who have been silently listening to Touma's having a call now asked, "Kamijou-san, why did the magician call you? Is there something that you haven't told me yet?"

Touma know that it would be the right thing to told Ruiko as well, "Okay Saten listen to me now. When the magician named Kanzaki Kaori, the woman that you saw earlier today attacked me a few days ago have told me about all kind of things. First of all, Stiyl and Kanzaki were from Neccesarius, just like Index. They were tasked by their church with protecting Index and her dear friends, but Index wasn't aware about it at all. They told me that because of those grimoires, her brain has took 85% of her brain with the other 15% left for other functions. So because of that, Index have her memories wiped every year, or else she would die. So every year Stiyl and Kanzaki made a plan where they would pretend to be Index's enemies, so they wouldn't feel like they were betraying their friends when the memory erasure came."

"That's insane, so they have done this for a few years in this whole time?!"

"That's right.."

His hand create a fist of him being angry, "Even so, I won't even make sure Index will get her memory erased again."

His declaration shows a promise that he want to do no matter what happen.

Ruiko stand up to be on the same level as Touma as she said, "Then let me help you as well, we already went through this from the start so it would be fair if I helped you out now."

Upon hearing this, Touma gave Ruiko a very glad smile, "Thank you."

Ruiko gave him a nod in response.

"Okay, let's try to ask Komoe-sensei about this memory problem, it would be a good thing for having a good information for how memory works right?"

"That's a good idea Saten," Touma proceed to dial up Komoe-sensei, "I hope she's not busy right now."

Touma proceed to try to call Komoe-sensei, but unfortunately even though her phone is ringing she isn't answering at all.

"Dammit, she isn't answering at all, I guess I have to call a random brain doctor if that's the case." Touma decided.

Before Touma try to take a phone book, Ruiko interrupted him, "Wait Kamijou-san, I think I would call Misaka-san to helped out in this one."

"Biri-biri? Are you sure it's okay about it?"

"Don't worry about it, Misaka-san should be knowing about this because the school she attended, Tokiwadai has a curriculum on a par with curriculum level so she must know anything about how memory works." Saten immediately replied.

"Oh yeah, this time make sure you closed your mouth with your hands because it will be a surprise for her to know that I'm with you right now."

With no further encouragement, Touma immediately closed his mouth with both of his hand.

Ruiko reach out her cellphone and immediately called Misaka. After a few rings, Misaka picked up the call and asked, "Saten-san, is something wrong?"

"Misaka-san, sorry to called you out this late but there's something I wanna ask you about."

"It's okay, what do you wanna ask about Saten-san?"

"I wanna know, does people with only 15% brain capacity only able to live for a year?" Ruiko then turned on a speaker mode on her phone.

"That's ridiculous Saten-san, Brain doesn't have any limit at all."

"They don't?" Ruiko asked back.

"That's right, research suggest that Brain doesn't have any limit at all because they able to store up to 104 years of memories. Even 15% of brain capacity couldn't take in the information a person gathers over a life time."

"I see, so that's how it is. Thank you, Misaka-san."

"Don't worry about it." Misaka then ask Ruiko, "Why did you ask about this question all of a sudden?"

"It's just a homework I got this summer, so don't worry about it. See you later, Misaka-san." Ruiko lied.

"See you later, Saten-san." Both Ruiko and Mikoto hung up from their phone call.

As Mikoto put back her phone, she wondered, 'Why does it feel like that Saten's lying about having a homework? Is there something that I didn't know at all?'

She then remembered her encounter with Ruiko who also with Touma the other day, 'And also at that time, why did Saten-san become friends with that idiot? Am I missing something right now?'

Mikoto then decide to shrugged it off for now and go back to sleep because she's tired now because it's almost midnight.

Meanwhile back with Touma and Ruiko, Touma removed his hand from closing his mouth, "So if Overloaded brain isn't doing this to Index, then something else must have doing this instead."

Ruiko then recalled what Index explained a few days ago, "Remembered about Index explanation about her grimoires? She said that if someone able to use all those grimoires, they could manipulate the entire world. If that's the case, could it be the church did something to her to control her?"

"That has to be it.." Touma agreed.

Touma kneeled down above Index, looked down at his right hand.

"How long it takes until those magician came back here?"

"5 minutes left." Ruiko answered, looking at the clock.

"Then there's still time to do it."

Touma then undid the bandages around his right hand.

"Saten, there's something I haven't to tell you about. When a graviton incident happened at seventh mist, I was there at that time and stop the explosion from Hurting Misaka and the other girls there."

"Wait, the one who stopped the graviton bombing is you?" This revelation surprised her because she thought that Mikoto was the one who stopped the graviton attack, but it turns out that it was Touma who have not only saved Mikoto, but also saved her best friend Uiharu and the little girl with her as well, "Then why didn't you tell them that it was you who stopped the bomb?"

Touma smiled, recall the similar situation when Mikoto tried to tell him to reveal that he is the one who stopped the bomb, "Nah, I prefer not to because everyone turned out to be safe, so what difference does it make who really saved them right?"

Ruiko was flabbergasted, She know Touma has an incredible right hand, but she never knew Touma could be this amazing as well, "You really are amazing, Kamijou-san."

"Thanks." He appreciate the praise from the girl, "You know I think this is the time."

"Uhhh the time for what, Kamijou-san?" Ruiko wasn't sure what he was about to say.

"The time for me from playing the hero to actually be the hero." His phrase continues with a good stance of him finished undid the bandage around his right hand.

Touma proceed to touch Index head, but nothing changed at all. He proceed to looked at all over her body, but decide to think it might be too much for him, but something caught his attention. It was Index heavy breath that caught his attention.

"Could it be…"

He leaning closer to Index, and then caught something dark inside her mouth which shaped like a rune writing. And because of that, Touma immediately wiggling his finger inside Index's mouth which made Ruiko got surprised by his action.

As Ruiko about to ask what he is doing, Touma got thrown back, nearly crashing into Ruiko.

"What just happened Kamijou-san?"

The question didn't get an answer as they saw Index started to float into the air, coated in a black aura. Her eyes looks blank with a rune imprinted on her irised. And when she saw Touma and Ruiko, she charged towards them.

"Get behind me, Saten!"

Touma get in front of her with him raising his right hand.


Stiyl and Kanzaki were just outside the apartment as they approached because it's already midnight of july 28th and were prepared to do a memory erasure ritual. However something they didn't expected has happened, a blue light blowed the door apartment but what's more surprising is that the blue light contains a mana which the magicians can sense.

Because of that, the two of them rushed to get in front of the door to see Index is in a john pen mode with Touma and Ruiko tried to push away the apartment sliding door off them.

John pen index began to talk, "Urgent warning, read from chapter 3, verse 2. A rupture has been detected in all barriers, one through three. Regeneration provisions failing. Auto regeneration not possible. Action required to preserve the library. Assigning priority to interception of the intruder. Currently reverse calculating the magic formulas that have penetrated the barriers by accessing the library. Failure, unable to locate relevant magic. Breaking down formula composition to develop local weapon to eliminate the intruder. Locating most effective magic. Desired combination for intruder repulsion has been successfully acquired. Now deploying specified magic. Employing Saint John's Holy Sanctuary. The intruder will be destroyed."

With that happened, now the final phase of saving Index finally started.