One night, you became unbearably bored and decided to perform an unusual ritual found on a questionable website. To your surprise, the ritual worked, and a demoness appeared before you, offering to make a contract. However, before you could consider her offer, another girl appeared in your apartment—an angel—who tried to dissuade you from making a deal with the demon, seeking to guide your soul towards eternal bliss. Now you have to find a balance between the seductive Astra and the pious Juse, each of whom is trying to tip the scales in their favor.

Juse, an outstanding student at the Academy of Angels in Heaven, has decided that saving your soul is the right choice. Juse is a kind and sincere girl, but even the brightest light has its shadows. What lies behind her innocent smile and noble intentions?

Astra is a symbol of the sins of the underworld: she is bold, charming, and lives for pleasure. Boredom is same as death to her, and she knows a lot about death. But perhaps there is a real Astra behind this confident mask?