Hina Futaba

The Futaba Detective Agency, being run by Rentarou, who has taken over the family business, after his father's death 3 weeks ago. Along w/ Sara & Souju, his live-in identical twin assistants. He ends up running afoul of the local Yakuza. (myanimelist.net)

With his mother dead and his father working abroad, Futami Nozomu returns to the town where he lived as a child, to attend high school and work part-time at a local shrine. He soon finds himself caught up in a local legend of twin girls loving the same man. And there are many twin girls in this town.... (myanimelist.net)