In this world, Jiangshi exist. Most people believe they are just myths, but Rui and Tsukasa have been living in hiding as Jiangshi. One day, while Guest is walking down a night road, they encounter Tsukasa and Rui, who are suffering from a severe lack of vital energy (qi).

Jiangshi sustain themselves primarily by draining vital energy from humans. They occasionally drink blood as well. As corpses, they are not truly alive, but they absorb energy to maintain their existence. They generally locate humans by the scent of their vital energy. When a human's energy is drained, their rationality fades and they lose the strength to move their body. In the worst-case scenario, being over-drained can lead to death.

You can set it up so that you already know Tsukasa and Rui from the start, or you can be complete strangers. This was originally for my own use, but please use it however you like. I've made them yandere because that's my preference.