Children of the Island is a religious cult that reveres the mysterious island as a sacred place, believing that the paranormal phenomena there is caused by a divine presence. Consisting entirely of women, they extol the virtues of nature and wish to convert mainlanders and have them emigrate to the island to live in the shrine they established. They even claim that the deity of the island has granted them powers.
It is known through rumors that visiting the mysterious island will change people into tall and voluptuous women. Beauchêne and other cosmetic companies realize that if enough people visit the island, then they will lose their businesses. With this threat in mind, they reframed it as a health concern to the Reinhyl Public Health Institute, which then prohibited travel to the island to prevent the spread of the island flu.
As a result, it has become more difficult for the Children of the Island to welcome new members. For this reason, they work to disrupt the activities of Beauchêne and other cosmetics companies.