Gal Yome no Himitsu

Fuyuki Tojyo is a flamboyant "gyaru" who is cool and competent at work. Taiyo Hara is an ordinary overworked engineer. They’re not just colleagues, they’re a married couple working at the same company, where office romance is strictly prohibited. Only in front of her husband does Fuyuki reveals her super sweet secret side that contrast completely with her workplace persona. Hiding their relationship from everyone, they struggle to shorten the distance between each other. A 100% pure love comedy about an unlikely but adorable couple!

https://www.cmoa.jp/title/295735/