Firefly symbolizes Japanese summer. In Semboku City there are some firefly observation spots that are open to the public. Nishiki Area has four of the spots where you can see Heike Botaru (Luciola lateralis) and Genji Botaru (Luciola cruciata).
Heike Botaru are common species of Japanese fireflies, along with their couterpart, Genji Botaru. The namings, if you are into Japanese history, might sound familiar. As is scribed in The Tale of the Heike (平家物語), the Heike (平家;Taira clan) defeated the Genji (源氏;Minamoto Clan) in a conflict at the end of 12th century, Genpei War (1180- 1185).Both Heike Botaru and Genji Botaru are said to be the reincarnation of both clans or the ghosts with unachieved wish.
Whatever is said, fireflies are beautiful! They are decreasing the number in many areas of Japan and designated as a protected species, so not all areas are open to the public. Here in Nishiki area, you can enter the private premises to catch a glimpse of them.