I can't go back to my husband anymore... - Reunion that drives chastity-

When Eriko was a student, she was in love with her childhood friend, Kyo. However, one day on the date, Kyo disappeared. Eriko later married Kyo's best friend, Takeshi. Eriko, Kyo and Takeshi had a love triangle when they were students. And then we met again for the first time in 20 years. The gears that Kyo and Eriko had stopped were starting to move... Her feelings for her beloved husband remain the same, but she has not forgotten her feelings for Kyo. Despite being tormented by guilt, the muddy love triangle, covered in immorality, begins again...