"Cassian, I have to go to school."
I was still lying on the sofa, eating snacks and watching TV.
"Really?"
"I don't intend to change my lifestyle just because I became a Master."
"Alright~ Have a good time. Bring back some ice cream too~"
At that, Tohsaka Rin made a face and exploded in anger at me.
"Hey! Aren't you worried about me? What if I get ambushed or something!"
"I'm respecting your wishes. If you want to go to school, you should go."
"Seriously!! Sigh... let's not talk about it."
"Geez, what a fussy butler. Fine! I'll be near the school."
I reached out my hand to Tohsaka Rin. Rin looked at my outstretched hand, tilted her head for a moment, and asked.
"Huh? Why the hand all of a sudden?"
"Give me money. I'm going to the arcade."
"Hey!!!!"
Thump!
Tohsaka Rin hit the back of my head with an angry face.
"Ahem... the butler is fierce... I gave you a lot of jewels. Don't you have money?"
"I'm grateful for that, but you have to protect me while I'm at school. What arcade!"
"I'm bored..."
"Geez, maybe your other name is 'King of the Unemployed' or 'King of the Househusband' or something?"
"Wow~ that's too much. Where can you find a Servant as capable as me, saying such harsh things..."
"Anyway, follow me!"
I was dragged by Tohsaka Rin to the front of the school.
"Don't you have some ability to hide... like spiritualization or something?"
"I do."
I hid my body using [Stealth].
"Oh, that's impressive. I can't feel anything."
Since talking while in stealth would give me away, I used [Telepathy] to communicate.
[Right? I'm all-purpose, you know. So serve me well.]
"Yes, yes. Sigh~ I'm tired even before classes start."
As Rin was about to enter the school, I grabbed her shoulder and stopped her.
[Hey! Butler, there's a bounded field? Is this school some kind of magic school?]
At that, Rin was taken aback.
"What? Really? That can't be. This is an ordinary school!"
[Really? Hmm... it seems like a bounded field related to souls?]
Rin made a bewildered expression and entered the bounded field.
"This, really... what kind of guy is doing this in my territory!"
After school, Rin wandered around, looking for the anchors maintaining the bounded field. We found seven and finally found a bounded field anchor that looked like the 'core' on the rooftop.
"This seems to be the core? Cassian, can you check it out?"
[Sure, it seems like a bounded field made to consume the souls of humans inside for nutrition.]
"Why would someone do this? Is it because the Master doesn't have enough mana to provide to the Servant?"
[Probably? Either the mana provided by the Master is insufficient, or there's another purpose.]
"I don't particularly feel lacking in mana while having Cassian around..."
[That's because I'm a Servant with great cost-performance!]
Actually, with the [S2 Organ] ability, mana is always replenished. So, there was no need to use Rin's mana. It's the energy source used by the Angels from Evangelion, so there's no shortage. Even so, to avoid looking suspicious if there was no consumption, I was taking a little mana from time to time.
"Yes, yes. You're so great. Then let's get rid of it first."
[Rin, we have a guest.]
As soon as I finished speaking, Lancer appeared on top of the water tank installed on the rooftop.
"Wow~ this, I can't find the Servant even though the Master is here. Not sure if it's because of good abilities or long-range communication skills. Usually, I could find them, but I can't sense anything at all... is it the Master of Assassin?"
As Rin was flustered seeing Lancer, I released stealth and hid her behind me.
"You're clearly Lancer, aren't you."
"Yeah, are you Assassin?"
Lancer seemed to mistake me for Assassin since he couldn't find me.
"Yes, I'm Assassin."
Then, Rin tapped my back from behind and said.
"Here, on the rooftop, it's tough. Let's go down."
"Why fight while measuring each other? Just wait. I'll quickly deal with this weakling and come back."
Hearing that, Lancer frowned and summoned his spear.
"Hey, you should watch your words. Who are you calling weak?"
"You, you!"
Looking at Lancer's expression, he seemed really pissed off by my words.
"This guy!"
Thud!
Lancer quickly rushed to thrust his spear at me, but I immediately grabbed the spear and kicked Lancer away.
Thump!
"Gah!"
Crash!
Lancer, hit by my kick, rolled on the rooftop floor several times before stopping.
"This spear is mine now."
I immediately put Gae Bolg into my inventory. Lancer spat blood and struggled to get up.
"Kuh... how can this be..."
Lancer tried to escape quickly, but I swiftly approached and broke his neck.
Snap!
"Ghk!"
Then, Lancer's corpse weakly fell to the spot and turned into dust, disappearing.
Ding~!
You have acquired [(B)Spear Technique of Cú Chulainn], [(A)Spear Technique].
Tohsaka Rin came over with a surprised expression and said.
"No way, how did you handle a Servant so easily?"
"I told you, I'm the strongest! Butler! Now call me Lancer."
I took out Gae Bolg from my inventory and swung it coolly.
Whoosh whoosh whoosh~
"Uhahahah~"
Then, Rin looked at me with pitiful eyes.
"You seem strong, but... your mental state is a bit..."
"Ahem! They say Masters and Servants meet beings with similar tendencies!"
At that, Rin flared up.
"What!? I'm not that weird of a person!"
"Haven't you heard the saying 'like Master, like Servant'? Hahaha~"
Rin sighed and said.
"Ha... this is driving me crazy... let's deal with the bounded field first."
We handled the bounded field and went down to leave the school.
"Butler! Someone is watching us?"
"Huh? Who?"
When I pointed at the school window, the doll that was there, realizing it had been noticed, quickly ran away.
"Shall I deal with it?"
"Is it Lancer's Master? Well, since the Servant is gone now, it should be fine to leave them, right?"
Rin seemed to be misunderstanding something, but the one who saw us and ran away was 'Emiya Shirou'.
"Yeah, it probably doesn't matter. I'm hungry, so let's eat. Of course, with the butler's money."
"Just eat home-cooked food. You cook well."
"It's too much trouble at this late hour, let's buy food. I gave you a lot of jewels. You miser!"
"Those jewels are for paying off some debt and for the future..."
Tohsaka Rin, trying not to spend money until the end. It might be because she's fond of my cooking skills, but it seems closer to the former.
"Butler, if you keep this up, I won't give you more jewels."
"Ugh... fine!!"
Eventually, at my words, Tohsaka Rin went to a nearby ramen shop, ate a bowl each, and returned home. As soon as Rin returned home, she started diligently processing the jewels I gave her.
"Rin, what will you wish for if you win the Holy Grail War?"
"I haven't thought of anything? I just participated because I wanted to win."
"Really? Then, can I use the Holy Grail?"
At my words, Rin stopped processing and looked at me, asking.
"What will you wish for?"
"Hmm, maybe wish to marry a virtuous and pretty girl?"
Rin laughed at that.
"Pfft! Trying to be a househusband?"
"Well, that's not bad either. And a wealthy househusband would be good, right? For example, a husband who can give you tons of jewels."
"Oh~ that, sounds good... ahem!"
Rin, perhaps embarrassed, blushed and coughed loudly, then started processing jewels again.
The next day, I was sitting in the living room, drinking coffee. Then, I saw Rin coming down, yawning.
"Good morning. Don't I have one?"
"I don't know who's the butler. Here."
I took out a cup of coffee from my inventory and handed it to Rin. Then, Rin drank the coffee I gave and admired it.
"Wow~ this coffee is delicious?"
"Glad to hear it. By the way, do you have a sister?"
"I do. But my father sent her for adoption when she was young."
"Really? I looked around the school yesterday, and there was a peculiar kid raising strange worms infused with mana inside her body. So, I read her mind a bit. Then, I saw Rin's childhood appearance."
At that, Rin was so surprised that she spilled the coffee she was drinking on the floor and asked me.
"What? Worms inside her body, is that true?"
I decided to tell the truth for the sake of quick progress.
"Yeah, I think it might be that sister you sent for adoption."
"Maybe you saw wrong? What's her name?"
Rin seemed to want to confirm if what I saw was someone else. Rin seemed to already know that Sakura is her biological sister.
"I clearly heard it was Matou Sakura."
When I confirmed that the memory I read was Sakura's, Rin was shocked for a moment, then asked about the worms.
"Why are there such worms in Sakura's body??"
"Well, should I tell or not... I'm hesitant to say because you might be shocked."
"It's fine, tell me. Quickly!"
What I was about to tell was beyond imagination, and I wasn't sure if Rin could accept it, but I decided to tell.
"Your sister, as soon as she was adopted by the Matou family, was thrown into a worm den with lewd worms by the head of the Matou family, Zouken, and suffered long-term sexual abuse, and was even raped several times by her brother, Matou Shinji. Plus, there are lewd worms inside her body too."
When I told what Sakura had been going through, Rin seemed greatly shocked.
"That... such... ugh... bleh~"
Rin suddenly started vomiting on the floor. It must have been hard to accept the reality.
'Well... I was shocked too when I first encountered that story, but for family, the shock must be greater...'
Pat pat pat!
I patted Rin's back and said.
"If you want, I can save her now with my abilities. I can remove the engraving worms too."
"Ugh... is that possible?"
"Yeah, just kill all the Matous. But let me ask one thing. Why did the Tohsaka family send your sister to such a place for adoption?"
I asked Rin what was questionable in the original.
"That, I don't know either. My father decided it, so probably he didn't know it was such a place. Because family magecraft is secret."
"I see. So, what will you do? Save her?"
Rin wiped her mouth and made a fierce face, saying.
"I can't forgive those disgusting bastards. Save my sister!"
"Understood. I'll handle it tonight and come back."
Rin washed up and prepared for school. I cleaned the coffee and what Rin vomited with [Life Magic] and waited for Rin, then went to school together. Aside from being bored, nothing much happened at school.
"Huh? Emiya Shirou is still alive. Is Illya watching over him?"
It seems Illya is watching over him until she summons a Servant, I guess. I looked around appropriately and went back to Rin; Rin seemed to keep thinking about what I said, so her expression was very bad until school ended.
"I'll be back. Just stay home. That way, I can come support quickly if needed."
"Okay."
I tailed Matou Shinji to confirm the house location and surveyed the inside with [Observation Haki]. Fortunately, Sakura didn't seem to have gone to Shirou's house. I immediately hit Shinji's back of the head to knock him out and threw him into the worm den in the basement. Then, I saw the lewd worms piercing through Shinji's clothes and burrowing into his anus.
'Ugh... saw something I shouldn't have.'
Next, I moved upstairs and secretly approached Zouken, observed with [Six Eyes], found the worm containing his soul, and immediately extracted only that worm with [Psychokinesis], compressed it, and burst it to kill it. Then, Zouken's body rapidly collapsed, and worms jumped out from inside, all of which I burst and killed with [Psychokinesis].
Ding~!
You have acquired [(A)Worm Mage], [(B)Binding Magic].
"These are unnecessary abilities, but having them might come in handy sometime."
I set the Matou house on fire meticulously from the basement where Shinji was to the upper floors using the [Mera Mera no Mi] ability, and as I came out, I felt something approaching quickly, so I hid with [Stealth] nearby to watch. First, Assassin (Hassan-i Sabbah) appeared and was looking around the burning mansion.
'That guy is coming now, so probably Zouken ordered something.'
Then, someone else approached quickly. This time, it was Rider. Rider spotted Assassin and started fighting like crazy. It seemed she mistook Assassin for the one who set the fire.
Clang! Chang! Chang!
'Ooh~ this is totally fun!'
In one-on-one combat, Rider was slightly better and pushed back bit by bit. Then, Assassin stepped back, used stealth, and started to escape. Rider, perhaps tired, didn't chase further and went somewhere. I immediately chased Assassin. No matter how excellent the stealth technique, with [Observation Haki] and [Six Eyes], he couldn't escape from me.
'There he is.'
When Assassin came into my sight, I immediately took out a wand sword from my inventory and cut his neck.
Slice~!
Thud!
Thump.
Ding~!
You have acquired [(A)Stealth], [(A)Delusional Heartbeat: Zabaniya].
[(A)Stealth] is absorbed into [(EX)Stealth].
"Hmm... this technique, I think it's the one that creates a virtual heart and bursts it when you touch the chest, right?"
It has the drawback of needing to touch the chest, but it's good for assassination. I thought the work was done, so I returned to Tohsaka Rin's house.
"Why are you so late? Did you handle it well?"
"Yeah."
I told her what I did at the Matou house. Tohsaka Rin brightened up after hearing my story.
"Phew... I feel relieved. Then, we need to find out where Sakura is now."
"I know where she is. I read her memories, so she's at that 'Emiya Shirou' or whatever's house."
"Emiya Shirou, probably. Anyway, come with me. Since she has no place to stay now, we should quickly bring her home."
We went to Shirou's house and rang the bell.