Did you know, Ruby?

"That I'm a homuculus?" "That my growth's stunted? That my life's short? You weren't aware of this?"

...Even if some parts of your Illya's body are different from a normal person's...

But Illya-san's still growing! Even in a parallel world, it should all be the same!

However, it is a fact that Irisviel originated as a homuculus. You shouldn't be too different from your mother.

Mama too!?

Did Kuro know this?

Going by their physical characteristics,

I'm afraid Liz and Sella are ones as well.