Saikyou no Hitozuma Heroine ga Netorareru made -Onegai! Otto ni wa Barasanaide | 最強の人妻ヒロインが寝取られるまで ～お願い！夫にはバラさないで…～

"Kouhi Mayumi"

She probably spends her time as a housewife. A housewife is a temporary figure to hide from the world.

Her true identity is to fight against an evil organization that threatens humans behind the scenes. She is "Mistress Blue", one of the "Mistress Ladies" who was given a transformation brooch to protect peace and order in the world.

But one day, I saw her undo her transformation, By chance, she is seen by her husband's boss, Goro Sumiya.

Sumiya has been secretly planning to violate Mayumi for a long time. He steals her transformation item from her and demands that she be "cuckolded" by him on the condition that he returns it...