After the assassin was defeated, Caster came towards me with a big smile.

"That was fun, here let me help you up"

She grabbed one of my arms and wrapped around her neck.

"Thanks, without your help, I don't know what would of happened"

"Well it is a servant's duty to protect its master" she dropped her smile for a more worried look.

"We need to get you some treatment for those wounds you have"

"On it" Akeno said creating a circle.

"Oooh what does it do!?"

"Teleports us back to HQ. Rias, tell Asia to get ready to heal Y/n"

Caster brings us to the circle as we head back.

~~~~~

No Pov

The assassin begins to glow as particles begin to emit from her body.

"I'm sorry master... I've failed you" she disappers after saying her last words.

~~~~~

"Goetia?" Grayfia questions to herself.

"It seems we have a new faction that's arrived" Sir Serzechs chims in.

"Why did you stop the fight? He could have died you know"

"It was a possibility, but I wanted to test his strength. The problem now is how was that Goetia person able to bypass the barrier?"

"We'll verify that later, right now we'll focus on the battle first"

"Very well"

Sir Serzechs goes back to paying attention to the battle but can shake off the recent thought.

"The next intruder the enters we'll deal before they make contact with the fighters"

"As you wish" she bows as she walks to one of the head guards.

~~~~~

Y/n Pov

"We're back" I say while being suppoeted by Caster.

"Asia"

Asia quickly hurries to your side as Caster lays you on a couch. Light emits from her hands letting you know she's healing you.

"Hell of a fight you put up" Caster smiles at you.

"Yep, you just happened to finish up my doings" I say smiling back.

"Well from now on you don't have to worry about that"

"Aren't you affected by her poison?"

"Nah, I have resistance towards it"

"Handy"

"Yup"

"Done" Asia says, raising her hands signaling she was finished.

"So, who are you?"

"I am Sanzang, but I also go by Caster. Feel free to call me whichever"

"Well Sanzang, I appreciate your help with saving Y/n" she bowed.

"No problem, he is my maste-er I mean disciple" she corrected herself.

"What do you mean disciple?"

"He summoned me through a speacial card used to summon heroes, heroes like king Arthur and others"

"Interesting"

"Indeed, we form contracts with the person who summon us, becoming our masters"

"So how is he your disciple if he's meant to be your master?"

"Because I wanted it to be that way"

"Okaaay" Rias didn't question any longer.

She walked towards Y/n, noticing something in his right arm.

"Did he use his sword?" She asked Akeno.

"I didn't see him use it. As a matter of fact, I didn't see him use a weapon what's so ever, he used his fists and legs"

Rias put her hand to her chin.

"If she was meant to kill just by being touched how did he punch her and not injest a lot of poison?"

"His body was covered in it, just not the full amount he normal would had he not deployed that little black magic thing he has" Sanzang said holding your arm.

"How did he get this and what is it?"

"From my understanding, it's supposed to be some type of dark magic, as to where, I have no idea how it came about"

"Hmm.. interesting" Sanzang was holding on to your arm examining it.

"His grandfather sold his soul to a spirit trapped in that sword if I am not mistaken"

"And he is able to weird it's power without using the sword?! I knew I had an amazing master"

"It's not even close to it's full power either" Akeno spoke up from behind Rias.

"Had he used it, that fight would of been a cakewalk"

"He did fight off a lot of skilled soldiers his grandfather had with relative ease despite having no fighting experience" Rias pondered a thought.

"What's wrong Rias?"

"If I really want to win" she sat down in front of you, caressing your hair as she watched you rest a bit.

"No I couldn't force him to" she hit her head with the palm of her hand.

"What's troubling you?" Akeno worriedly, placed her hand on the president.

"Thinking if I should let him use it, but it's too risky" she started biting her nails nervously.

"You know what happened last time he used it" Akeno warned her.

"I know, but it could almost be a guaranteed win with the power he has. His full capacity level could possibly be king piece type of power"

"Yeah but we wouldnt have any firepower to fight that thing if it came out"

"I know but-"

Asia interrupted her.

"Actually, I think I may know a way to stop the beast if he does rampage"

"Really, how?" She seemed happy knowing there could possibly be a solution to the problem.

"Well... This may be a bit of a stretch of a solution..." She said nervously.

"We got to give it a shot to know if we failed or not, so what is it"

"Eh ... The answer may be... Koneko"

".... Huh?" Both were lost for words.

"Sorry to interrupt but who is this Koneko" Caster asked, confused over who or what they were talking about.

"My other rook"

"So a chess piece"

"It's a long discussion we can get into some other time. Wait Koneko's the answer? I don't think she'd be strong enough against him in that form" Rias disagred.

"The reason I believe it may help is because they seemed really close and uh... You know... That morning"

"Hmm.. you may have a point"

Rias looked back at you, rubbing your head once again.

"Still, I don't think I could force him to relieve that painful experience again"

She leaned over and kissed your forehead.

"From now on I'll make sure to protect you from anybody, even any bad thoughts you may have. As your master and family, I have a responsibility to make sure your happy and safe from now on" she smiled as she got back up.

"Alright ladies we need to take care of the fort"

"Yes ma'am!!"

"Alright, I'll take care of my master til he wakes up" she lifts your head up and places it on her lap. Brushing and playing with your hair.

"I'll make sure nothing happens to him too" she smiled towards Rias.

"Thank you" she returned it back.

Even after saying what she said, the thought was still on her mind wether or not to let you use your cursed sword.