It was directed by Tsutomu Yabuki and produced by Studio Hibari and Trinet Entertainment.
This club is called the Kaiun Kenkyukai (Better Fortune Research Organization), a cover for the Happy Seven, seven girls who each have a different power of the Shichifukujin, the Seven Lucky Gods.
Amano recognizes the lone male member of the club as the boy who rescued her in her dreams.
She realizes that the student council president is Happy Seven's adversary, working with the woman in the purple kimono she saw in her dream.
It is the Happy Seven's job to fight them and find people with incredibly bad luck (such as Amano) and help them improve their fortune, through praying for their problems to be solved at a stone in a forest.