The parents of Princess Mako, the eldest granddaughter of Emperor Akihito, demanded her boyfriend Kei Komuro and his mother resolve their finances before the Imperial Agency in February postponed their formal engagement and marriage ceremonies, a source said Wednesday.

Prince Akishino and his wife Princess Kiko told the Komuros sometime late last year or early this year that a ceremony for their official engagement, which had been scheduled in March, could not be held without resolving their financial troubles, reported weekly magazines.

In September, the couple, both 26 years old, announced their engagement after receiving the Emperor's blessing. But the Imperial Household Agency announced a postponement in February, citing a "lack of preparation."