The origin of this bus route is the former Miwa-cho Municipal Management Bus, which was handed over from the West JR Bus Company and the former Kyoto Transport Co., Ltd., and the Shinki Bus Co., Ltd. to Miwa-cho (this is the town that used to belong to the former Amata District of Kyoto Prefecture.)
西日本JRバス・旧京都交通・神姫バスの路線を旧天田郡三和町(京都府)が継承した三和町営バスに由来。