One day, Chizuru (Nana Asakawa) and Mioto (Aino Kuribayashi) enters problem-solving office Kurogarasu. The two girls look naive, but Chizuru is a leader of a enjo kosai group. Their group makes money by having young girls date older men for money. Thugs are threatening Chizuru for money. Chizuru pays 2.5 million yen to the problem-solving office Kurogarasu for their help. Kuroto (Tsubasa Sakiyama), Yuya (Keisuke Ueda) and Hina (Moga Mogami) take the case and begin to investigate the thugs, but they find something unexpected.

Director: Toshiya Kominami