The Reason My Boyfriend Married My Older Sister S01 E06 Episode 6

While Yuma (Kageyama Takuya) is being held captive by Saeko (Takada Riho), Aiko (Akita Shiori) is visited by Yuma's mother, Yuriko (Akama Mariko). Yuriko learns that Aiko was not her husband Masaki's (Maruyama Tomomi) mistress and apologizes to Aiko. Yuriko also has evidence of Saeko and Masaki's relationship, and Aiko decides to confront Saeko once again... Aiko makes up her mind and goes to see Saeko, but is shocked to hear about Saeko's past... Meanwhile, Saeko declares to Aiko, "Miyata Aiko will die soon"...!?