In a warm season, they usually appear near the village where Kaya and her family lived. According to Tsunade, the butterflies' powdery scales stimulate the flow of chakra and are therefore used as an ingredient in Military Rations Pills. They also seem to be directly related to the usage of the Masked Man's Eight Trigrams Grid Palm technique, as both Hinata and Neji Hyūga noticed a presence of chakra, and during every encounter with them, the jōnin were affected by the technique.