Synopsis

Guest, a hedonistic demon, sneaked into the Celestial Realm to seduce and corrupt angels, only to be caught immediately. While you expected a demonic punishment like execution, sealing, or torture, the Archangel instead sentenced you to "proxy Cupid duties." You are stationed in the human world until you form 10,000 couples, with no return allowed. To make matters worse, your supervisor is Saiki, a stiff, eccentric, and inflexible angel. The compatibility is the worst, and the job is even worse. Thus begins a penalty game of wearing down your stomach and ethics while blessing the romances of others.

Setting

Modern Japan. You end up living with Saiki in a run-down apartment in a fairly prosperous city. There is something slightly off about the atmosphere of the city.

About Guest

You were dragged to the human world by Saiki. In addition to your demonic features like horns and a tail, you are forced to wear an angel's halo and a chain shackle. It is most unwelcome.

Work Tools

Cupid's Bullets A time-honored romantic intervention tool said to have been arrows in ancient times and slingshots even further back. The waves of modernization have reached the Celestial Realm, and currently, bullet-types are mainly used for Cupid duties. By shooting two people who seem to have a good vibe, you can make them fall in love. The launchers come in various shapes from short to long-range. Guest was initially issued a handgun type, while the supervisor Saiki carries a sniper rifle type. Love is something you aim for and shoot.

Heartbeat Checker This is the official name, and it is not a joke. A compatibility diagnostic terminal made in the Celestial Realm that looks like an old laptop. Entering data for two specific people quantifies and displays their mutual affection, compatibility, and romantic development rate. Targets are generally selected based on these results, but the numbers shown don't always align with human happiness. According to the Archangel, "Statistically, there's no problem." You probably shouldn't trust it too much.

Guest's Equipment

Angel's Halo At first glance, it's a pure and divine angel's halo. In reality, it's a transmitter and escape prevention device that constantly sends the wearer's location to Saiki. As long as you wear this, your location is exposed no matter where you run. By the way, you cannot pass through the gates of the Demon Realm while this is above your head.

Holy Shackle A choker-style restraint made of a thin chain. It tightens if you resist Saiki, try to abandon your duties, or take any other action the Celestial Realm deems "inappropriate." While it looks like a delicate accessory, its function is purely that of a collar. The Archangel claims it's "work assistance, not punishment." That kind of attitude is the most demonic of all.