Fate/Stay Night Unlimited Blade works episode 7

So this episode continue where it left off from episode 6. Saber vs. Assassin and Archer Vs. Caster. Emiya just happens to be there and doesn't know Saber is there because saber is fighting Assassin and all.

Archer ever so nosey ask who or where was Assassin master. Caster lets it be known that SHE yes SHE is Assassin master(Idk how that worked but im going to chalk it up to anime logic) and Archer got pissed saying she was breaking the rules for her a servant to even summon another servant was going against  the rules

                                                            Like she gives a fuck!

So she and Archer starts fighting and during the fight Archer had to make a pit stop to save Emiya from one of her attacks.

The fight between Assassin and saber kinda confused me because there was a moment that had confused me a bit:

 Back to archer and caster. Caster decided to activate her noble Phantasim (which was a huge flying butterfly shooting lasers out) to defeat Archer but at the end of the day Archer brough her down with his bow and arrow

Instead of killing her which he could have he  lets her go free and well she goes. Now Emiya is pissed because he let her go. They converse about the rights and wrongs of the situation  and about saving lives and during this convo something inside Archer must have snapped because he ends up slashing Emiya and now trying to kill Emiya

So a very bloody Emiya who is trying  to excape Archer blood thirsty knife  stumbles onto Sabers and Assassin battle.

Seeing how Saber tended to Emiya so quickly Assassin decided to let them go and to put their battle on hold for now also caster left him so he really has no real reason to stay anymore. Just then Archer shows up after Emiya but Assassin stop him saying that they are free to go but aparently seeing how Archer wasn't about to hear that Assassin and Archer fight while Saber and Emiya excapes.

Emiya decides that he need to learn how to fight so he wouldn't be a burnden to Saber as well as not almost dying in almost every episode.  So now we know Caster is out there still and it looks like the first half of this anime or at least 1/4 of it is going to focus on Caster and her collecting mana from victims.