According to Britain’s ITV, Jackson visited the amusement park during the night. The singer was also permitted to use the underground passages between the attractions.
Some lucky fans managed to get a glimpse of the star. Taemi Matsudi, who saw Jackson, said, "I said ‘I love you’, then he blew a kiss to me and flashed a victory sign."
Next Sunday, Jackson, 48, will meet several of his fans in Japan during a private party.