I Became a Replica Doll Created to Let My Sister Vent Her Emotions

I transmigrated... and became a tiny, heavy imitation doll of a noblewoman who was supposedly killed in the war. (Heavy as in weight, not possessiveness.)

That wouldn't be so bad, since she's surrounded by a whole bunch of lovely maids. Every day, she gets pampered by a knight who looks up to her noble self.

But then...

Looking at the person in front of her, who looks exactly like her, she wonders: can someone tell her why you didn't die?

And besides, I'm using your maids and your knight. Shouldn't you hate me for that? What's with that look?

Let me go... How can this person have more stamina than a doll?

So says one doll lady, completely drained of energy.

Ahem. This book is also known as I Got Caught Up in a Body Double Romance, Only to Meet the One I Loved in Secret and Of Course a Doll Lady Needs to Be Waterproof. Wait, why are you asking me that?