Hakushaku Reijou Wa, Keiyaku Kekkon Shita Ore Ni Itsu Koi Wo Suru?伯爵令嬢は、契約結婚した俺にいつ恋をする?; Hakushaku Reijou Wa, Keiyaku Kekkon Shita Ore Ni Itsu Koi Wo Suru?; When Will the Earl's Daughter Fall in Love with Me, Her Contract Husband?; Aku nikah Kontrak dengan Putri Earl, Kapan yah Dia Bakal Jatuh Cinta Padaku?

The story of a beautiful Kingdom Knight wife with royal blood and her husband, the plain seventh son of a poor Baron! Their Love? Suspense story, beginning with a contract marriage, starts now! That marriage is merely the beginning of a "culprit hunt" for an incident from thirteen years ago, swirling with secrets and conspiracies.