Gisou Shinkon - Ijiwaru Onzoushi no Dekiai kara wa Nigerarenai

Hana, a humble receptionist, is proposed to by Koichi, the No. 1 man she wants to marry in her company, a sergeant with perfect looks and family background. Hana is at the height of her happiness, the wedding ceremony is over, and she is excited about their wedding night, but suddenly Koichi's attitude changes drastically! He tells her that they are going to be a married couple under a mask. Hana is determined to divorce Koichi, whom she thought was so kind to her, but he tells her that he has no intention of divorcing her.
The newlywed life begins with the declaration of a masked couple, and it is not a simple matter!