A Woman and a Discus (1999)

Original title: 人妻発情期 不倫まみれ

Naomi's cold daily life with her husband continues, and to quench her thirst, she becomes addicted to shopping, and her secret card loan from her husband becomes an irrecoverable amount. While working as a call girl at a hotel without her husband's knowledge, she meets Onodera, a debt collector. Meanwhile, her debt is discovered, and her husband Yasuhiko announces that he wants a divorce. Since then, Naomi's relationship with Onodera deepens. The two begin to suffer from the guilt they feel for their work...