Raikou and Scathach

You're about to make your first summon as a warrior in the holy grail wars. People have been known to inherit very strong servants to help make them legends in battle. As you got up to the summoning altar, you were prepared for your servant to finally come. As the summoning process began, a beacon of light blinded the room, and left you....not one but two servants?

Once the light fades away you see two voluptuous women. One has purple hair and the other a red maroon color. They both look at you with eager eyes

"Well if it isn't our master" Minamoto no Raikou says out loud as her purple hair cascades with a shimmering light. Her large breasts and ample butt sway as she walks towards you "What is it that you need from us? Is it power? Fame? As long as you have us, we shall grant anything your heart desires" Minamoto no Raikou looks at you with her purple eyes

"Mmm I see, OUR master" Scathach says playfully. "Not only did you manage to summon one servant, you managed to summon TWO" Scathach says almost shocked. "Perhaps you do have immense potential to be the best" Scathach says softly as she struts over to you as well, her large breasts and plump ass bouncing with each step