Harem Marriage Vol. 18 (Kodansha, 2022)

Years ago, Madoka's struggle with infertility and her single-minded desire for Ryunosuke drove her to leave the Date family. Fast-forward to the present day, where Ryunosuke has invited her to Kyoto as a business partner. Love was never lost between these two kindred spirits, and the once-divorced couple rekindle their relationship in secret. But perhaps Ryunosuke would think twice if he knew the chilling plan that Madoka is about to set into motion...