Kei Komuro, the 29-year-old boyfriend of Princess Mako, will likely return to Japan next Monday from the United States where he has been living, sources with knowledge of the matter said Wednesday, ahead of their planned marriage.

Komuro is expected to meet the 29-year-old princess, the elder daughter of Crown Prince Fumihito, and prepare for a press conference after roughly two weeks of coronavirus quarantine, the sources said.

Combined file photo shows Japanese Princess Mako (R), a niece of Emperor Naruhito, and her boyfriend Kei Komuro. (Kyodo)

The couple are planning to register their marriage as early as next month.

After the Imperial Household Agency officially announces the marriage, the couple are expected to hold a press conference, according to the sources.

Komuro and Princess Mako met in 2012 while studying at International Christian University in Tokyo and they were unofficially engaged in September 2017.

Their wedding has been postponed due to a money dispute between Komuro's mother and her former boyfriend.

Komuro has issued a statement detailing the dispute but has not held a press conference to explain.

Earlier this year, Komuro graduated from Fordham University's law school in New York. He is expected to work at a law firm in the United States where the couple will begin a new life.

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