Ruruka is an exemplary cook and also exceptionally skilled at creating candies and other sweets. She won at the confectionery industry’s pastry contest. People find Ruruka's candy very addictive. Ruruka has a specially-made extremely addictive brand of chocolate that has the ability to brainwash others, so when consumed, the victim will follow her orders without question. Ruruka's "Forbidden Action" is allowing anyone to leave the building or else her poison injected bracelet will kill her.