Indigo no Yoru (2010)

Yoko Moriguchi stars as a woman who was previously a successful editor at a major publisher. One day, her fiance suddenly disappeared, and an embezzlement incident later led her to lose her job. She ended up as the manager of Club Indigo, an unusual host club in Shibuya. With various incidents happening around the club, she and her hosts work together like a team of amateur detectives to solve the cases.