You awake to a choice

You wake up in a pile of fluffy blankets on a bed that isn't yours. You shoot out of the bed in surprise to only realize you're still at Einzbern Castle. "Oh, yeah. Right. How are you doing over there Rider?" You ask, looking over at your servant."I am glad to see you awake." Rider replies with a smirk. You nod. "Yeah. Let's find Illya to say goodbye and head home. I have no idea how I'm going to explain this to Fuji-nee."

You step out of bed and get dressed, only to be quickly followed by a knock on the door. You open the door to see Liz smiling in the doorway. "Good morning. Please, follow me." You follow Liz back into the dining room, where Illya runs up and hugs you tightly. "Onii-san, that meanie Archer beat up my Berserker!" Illya nearly cries. You kneel down and hug her tight.

"Don't worry. I'll take care of him." You say as you rub Illya's soft hair. She looks up at you and asks, ""Promise?" You nod and squeeze Illya reassuringly. "I'll do my best." Illya smiles. "Thanks Onii-chan." You nod. "You bet. I wish I could stay and comfort you, but I have to be heading home soon. Fuji-nee will already be furious."

Illya looks as if she remembers something, "Here, let me help you with that." She turns to Sella, "Sella, give Shirou the letter." You raise an eyebrow as Sella hands you a wax sealed envelope. "Don't open it. Give it to your Fuji-nee. She'll understand." Illya says. "What is it? You ask. "A personal invitation to stay the night at the castle, of course. It's well known to be an honor to be invited here. And that we sent one of our maids home with you to help take care of you, which is even more of an honor."

"Wow, thanks." You say, taking the neatly sealed envelope into your hands. "Speaking of, did you choose a maid to accompany you?" Illya asks as the pair of maids present themselves in front of you. You once again look over your two options. Sella, who wears a stern look on her face, and Liz with a warm smile and larger breasts. The pair are otherwise nearly identical in their dress.