Soredemo Shachou wa Bra wo Shiteiru.

Overview

I am pleased to announce that I am engaged to a handsome CEO after 0 days of dating. *But he likes to wears a bra. Keiko is a 34-year-old office lady who dreamed too much about marrying a high spec man. But instead she has been disappointed as she was getting past marriageable age. One day, Keiko found out the secret fetish of the second-generation CEO of her company, who was supposed to be the "ideal bachelor." Out of her stress from work and a sense of mischievousness, she threatened him by saying, "I'll ignore the female underwear, if you'll marry me." But the CEO seemed very enthusiastic about the idea and began to treat her like a doting lover!? (Source: Bunkasha, translated)

Source: AniList