Nozomi Hazuki works at a local credit union and is always devoted to helping others. She reunites with Jiro Manjiro, a fellow high school alumnus who recently opened a massage parlor. Wanting to support his dream, she proposes using the credit union's loan program to assist with renovating his shop. The renovation work is contracted to Yoshimura, an interior designer who is also a client of the credit union. However, when Manjiro delays payment, Yoshimura's business falls into financial distress. As a result, Manjiro accumulates bad debt, and Hazuki is held responsible for the failed loan. To atone for this failure, she is forced to sacrifice her own body.