Looking for manga title with a story like this:

Women and Men's departments are rivals in a department store. The designs of mens are always a topnotch and because of this, the seme was assigned to make an underwear collection. He made the uke, from tge women's department to be his model.

Aisaretatte Nugimasen. maybe...?

Thank you very much for the help!!! Though my gratitude is a bit late...