Ryusei refers to a rocket firework whose roots lie in the smoke signals used during the Warring States period. The white smoke left behind in its wake makes the form look like a dragon rising into the sky. Once every 2 years in the Asahina area, 13 teams compete against one other in terms of the height reached by their ryusei rockets and their skills in making the devices. There are highlights to enjoy both in the day and at night, with unique commentaries accompanying the summoning. It is designated as an intangible cultural asset of the prefecture.