The Nuna at Our Office

When Manager Son is sent to a new department, his boring office life takes a sweet turn. There, he meets Manager Ahn, an older colleague whose competence and charming aura leave him in awe. But as Manager Son grows closer to her, he realizes there's more to her strong, independent front than meets the eye. And soon enough, he begins to understand why office crushes can get complicated.

(Source: Webtoon Entertainment)