Mutchiri uchiiri: Momoiro chûshingura.

Kurako, Reiko, and Miki, three office ladies who work at Banshu Ako Bussan, a company run by Asano, and Yoko, a widowed cleaning lady, have been good friends since they were in the dance club in high school, and they still dance to this day. One day, Kira, the president of Kira General Trading Company, appears at the company and asks Reiko to become his secretary, and makes his way to her body...