Ore no Hanayome ni Nare: Totsuzen no Konzen Renkou

"Never in my life have I ever wanted someone so much. Will you marry me?" Following the death of her grandfather, in accordance with his last wishes, Maiko Aso, your average secretary, moves into a wealthy household with the Shiratoris. Does that mean she'll end up the bride to one of the three Shiratori brothers!? The oldest brother, Reiichi is the ultimate businessman and travels all over the world. The middle brother, Kyoji, despite being Japanese is a handsome lieutenant for the U.S. military. And the youngest, Ryozo, is a flourishing super star.... And ever since that fateful day, those three brothers have started to make their moves...! (Source: MangaPlaza)