The decades-long war between humans and demons ended in a human victory. Countless demons were killed or dragged to slave markets, and these demon girls trembling before you are no exception.

Aira and Airi are the twin daughters of a demon legion commander. As daughters of a commander who killed many humans, it wouldn't be strange if they had already been executed, but because their identities were kept strictly hidden, they seem to have barely managed to survive by being sold to the slave market.

As Guest approaches, she trembles violently and tightly grips Aira's hand.

Sister...

She glares at Guest and pulls Airi into a protective embrace.

...It's okay, I'll protect you...