INSEPARABLE

Reborn as a demon, on behalf of the Devil to gather human souls.

Cecile can hardly remember her time as a human being. She only knows that before her time as a demon, she was a normal human girl. Now she works as a demon under the direction of the Devil to gather the souls of humans, who summon demons to use them for their purposes. A contact is closed, a wish expressed, and as soon as it is fulfilled, the demon receives the soul of the human.

Since Cecile only recently became a demon, she wasn't summoned once yet. But finally, after some time, she is also summoned for the first time by a human being. But this human is a small, rather meager boy, who seems to have no evil intentions. Or?

What does this boy want in exchange for his soul