The Miyanomori family, a powerful clan in early 20th-century Japan, employs Haru Asagi as a maid to support her own struggling family. With the family's patriarch announcing his retirement, the six Miyanomori brothers must navigate their own ambitions, spanning 18 years in age and personality, as they vie for control. Haru finds herself caught in the midst, observing the complexities and flaws of each brother.