Japan’s Princess Mako has married her non-royal boyfriend Kei Komuro.

The Imperial Household Bureau submitted the necessary documents for the couple to officially register the marriage with the authorities on Tuesday, Japanese media reported.

The muted ceremony took place without any of the traditional celebrations after controversies over money in Komuro’s family that has been the subject of extensive reportage in Japan.

With her marriage to Komuro complete, Princess Mako officially leaves Japan’s imperial family.

Mako, 30, was originally due to marry her college sweetheart in 2018 but the wedding was delayed due to widespread public criticism over the relationship.

The negative media attention caused Mako to suffer post-traumatic stress disorder (PTSD), court officials announced shortly before their marriage.

Mako has planned to leave Japan to start a new life in the United States, where Komuro works for a law firm.

Komuro, 30, had gone to the U.S. to study law after the already announced wedding to Mako was cancelled in 2018.

He recently finished his studies there and passed the bar exam in New York.

Mako is the niece of Japanese Emperor Naruhiton.

Under Japanese law, female members of the imperial family lose their royal status if they marry a commoner.

Following the scandal surrounding Komuro’s status as a regular civilian, the media has been obsessed with financial problems in Komuro’s family.

There have been accusatory reports for years that Mako’s future husband’s mother owed money to a man to whom she had once been engaged, although there is disagreement as to whether the money was a gift or a loan.

Many Japanese were outraged by the possibility that the dispute could be settled with Mako’s tax-financed royal dowry of 150 million yen (1.3 million dollars).

The princess had since renounced her dowry.

Komuro had said that he could use his own money to pay off his mother’s debt.