
The story follows the complicated lives of Sami, her husband, and his mistress, Rika—who happens to be Sami's high-school love. As the series unfolds, Rika returns to seek revenge for an alleged betrayal by Sami years prior. However, a major twist in the plot reveals that Sami's actions in the past were actually meant to protect Rika, adding deep emotional tension and reconnecting their old feelings.
StatusEnded
TypeScripted
Original LanguageJapanese
Network

Season 1 of My Husband's Mistress Was My Ex-Girlfriend premiered on May 24, 2026
Sami discovers that her husband’s mistress is none other than Rika—her high school love. Still harboring resentment over a past betrayal, Rika sets out on a path of revenge. What she doesn’t know is that Sami’s betrayal years ago was meant to protect her. As their confrontation unfolds, old emotions begin to resurface. With hatred slowly fading, the love they once shared returns, drawing them back toward each other.