My old enemy and I were reborn as twin sisters

The Silver Sword Princess and the Demon King perished together, bringing an end to the war between humans and demons.

Seventeen years later, the young saintess Viya is always clinging to her twin sister Sophie.

“Viya, what are you giggling about?” Sophie asked in confusion.
“It’s nothing~ I’m just happy that I can always be with you, Sister!” Viya said, hugging her tightly.

She thought that if she could stay like this—holding on to her only sister—for the rest of her life, that would be enough…

But fate had other plans.