Dekiru Danjo no Dekinai Koi

With her model-like looks and perfect work performance, Mikoto Torii, who works at a major consulting firm, is a high-achieving woman admired by both men and women.
However, even Mikoto has her weaknesses... and that is "love."
When Mikoto is feeling down after being dumped by her boyfriend, she encounters her colleague, Miyazono, who seems to be perfect in both his personal and professional life!
The two, who always present a perfect image of themselves in front of others, make a promise to show their true selves only to each other.

Source: https://www.kodansha.co.jp/comic/products/0000371953