Due to a sharp rise in participant numbers, Japan housed some Asian Games athletes and officials on what unconventional accommodation option?

Explanation: Because of accommodation shortages caused by a sharp rise in the number of Games participants, organisers arranged for roughly 4,000 athletes and officials to be housed aboard a docked cruise ship, alongside temporary container-style huts and standard hotel rooms. Unlike previous editions, organisers did not set up a conventional athletes' village, with overall participant numbers reportedly rising from about 15,000 to around 17,000, exceeding the scale of a typical Olympic Games.