The *asagi-madara* (chestnut tiger butterfly)—known as a "butterfly that crosses the sea"—has been spotted in the Otokuni region of Kyoto Prefecture.

A member of the Nymphalidae (brush-footed butterfly) family, the *asagi-madara* is characterized by its beautiful wings, which feature a mottled pattern of pale blue-green on a black background. Some individuals are quite large, with a wingspan reaching around 10 centimeters. These butterflies are known to depart from the Japanese mainland in the autumn and travel toward the Nansei Islands or Taiwan; some are even capable of migrations exceeding 2,000 kilometers.