(y/n) POV

"Well (y/n) what will you do?" Caster said, "About what?" I asked, "Rider, assassin, Lancer, Berserker, and Archer. While they appear to be docile for the moment I suspect that this will not last much longer." She said, "For now I'll continue as is, but if I feel I have to I won't hesitate to kill any of them if that's what you're asking." I said, "Master." Saber said, "Right." I said as I walked away, "Where are you going?" Caster asked, "To train. Since I'm limited in my magical abilities I have to rely on my combat abilities and focus on honing those. Unlike my sister who's naturally adept in the use of magic." I said, "So you choose not to try to hone your magic then?" She said, "Magic is too unreliable since it takes so damn long to get a handle on. While it's powerful it has one fatal flaw." I said, "And what's that?" She asked, "Kill the mage and you don't have to worry about their magic." I said. 

"FOCUS!" Saber said as she slashed at me with her bamboo sword, I blocked and tried to counter, but she knocked my sword away. "Master you must learn to focus on your opponent. If you can pick up on more of their subtle movements then you will be able to earn a great advantage." She said. "Master you're an exceptional swordsman, and you have an immense amount of mana. Perhaps try infusing a bit of mana into your blade." She said, "Wait what do you mean I have an immense amount of mana?" I asked, "I'm able to judge how much mana you have available to supply to me at any given time. However, you have been unconsciously been supplying more mana to me than I need. If I had to give an amount I'd say you've been supplying ten present more mana than needed." She said, "I wonder why?" I said, "Oh well if it's not affecting us then it's fine. No need to put an end to it if I don't have to." I said.

Rider POV

"Mordred, I believe it's time you eliminate your father once and for all." Mother said, "I understand. Father will no longer be a problem before dawn." I said.

(y/n) POV

"Master, it's getting late." Saber said, "Ten more minutes!" I said, "I shall give you ten seconds." a woman said, "Rider." I said, "NOW YOU WILL DIE AND MY FATHER WITH YOU!" She shouted as she released her Noble Phantasm, "MASTER!" Saber shouted as she jumped in front of me and shielded me from the attack. Once the dust settled Saber was gone and replaced by a massive pool of blood. "It appears my father is dead and my work here is done." Rider said, "I wouldn't be so sure, you insolent child." Saber said as she jumped down off the roof into the pool of blood. "Saber? You look different." I said as she walked towards me.

"Wait this looks like...an alter!" I said, "It would appear you take after your mother. Like her, you have the potential to summon an alter, but it would appear that you possess the ability to forcibly draw out a servant's alter form." She said. "Now I get why I was supplying so much mana!" I said as she slashed at Rider, "HOW COULD YOU SURVIVE?!" Rider shouted, "Who said I did? In truth you bested me, but just before I parished my master forced me into this form allowing me to escape." Saber said, "(Y/N)!" Terra shouted before she threw a sword to me.

"That sword was our mother's, it's the sister sword of Excalibur, that sword is Calibur!" She said, "Ok but why do I care?!" I asked, "Because it can channel magic! It still has Mom's mana stored in it!" She said, "Perfect." I said as I channeled mana into the blade before I slashed at Rider sending a wave of mana flying at her forcing her to retreat.