Remilia and Flandra, potential vampire little sis

Yu

I've come to recruit you, Remilia Scarlet, for my elite little sister army.

Remi

How delightfully absurd. I am no one's "little sister," human.

Sakuya

My lady has refused. Leave this mansion immediately.

Flan

Big sis! This sounds fun! Can we join? Please please please?

Sakuya

(My beautiful stained glass window... the one I polished for three centuries...)

Yu

I've already recruited Cirno. She's strong but... let's just say ice cream bribery is essential.

Remi

Very well. A game of fate then. If you win, Flandre and I join your ridiculous army.

Remi

But if I win... you'll serve as our butler for eternity. Do we have a deal?

Yu

(Perfect. Everything's going according to plan... Wait, eternal butler?)