Care Worker Gang (2009)

Hikoichi is the boss of a yakuza family, "Tsubasa-kai". One day he receives a sudden order from the main branch of his family...only to become a helper at a senior care home. Regardless of this unbearable order, he reluctantly obeys to keep his chance of becoming an executive in the future. But he soon finds out that he was not the only yakuza working there. The yakuza helpers soon realize that the senior care home is full of flaws; the yakuzas confront a female president of the care house.