Ki no Mi Ki no Mama

The manga centers on Tatsuki Houshou, a female office worker, admired inside and outside the office as a popular and beautiful woman who is good at her job, but is very clueless when it comes to love. So clueless, that she does not even notice when a man makes advances toward her. Despite this, she still wants to understand love, and a person who makes her heart flutter appears before her.

(Source: Anime News Network, edited)