Tinkle (also called Tinkerbell) started as a five-member doujin circle founded by Harukaze Setsuna in Tokyo. They built a solid reputation at Comiket for their artbooks, but the group's output was pretty diverse—they released visual novels, doujinshi, manga, and light novels, and a few of their works even got anime adaptations. The circle effectively ended in 2010 when member Bell had to leave due to health issues. That said, Harukaze Setsuna never really stopped; they've kept producing artbooks and illustrations under the Tinkle name ever since.