Obey Your Secretary!(2011)

Hishosama ni Shitagae!

When Masatsugu's father spontaneously decides to travel the world, Masatsugu is forced into the role of company president. The plus side is that the secretary assigned to him is Shiroba, the man he's madly in love with. But Shiroba only seems to see Masatsugu as his boss instead of as a potential lover. If Masatsugu pulls a few strings, he can win Shiroba's body. However, Masatsugu isn't quite as in charge as he thinks he is.

(Source: DMG)