A forbidden Gu that prevents a man and woman from being apart, forcing them to stay within one step of each other. The onset lasts one hour and during severe cases may require kissing or more intimate contact to resolve. If symptoms are not resolved, spirit veins can be shattered or death can occur. This version was created by a Yaoguai woman and evolved so that neither party can use mana against the other during onset, and the two take turns experiencing symptoms. It was raised on seventy-seven types of poisonous insects and seventy-seven types of poisonous herbs.
