Holding candles, participants in the vigil prayed for the release of Goto, while his fate remains undecided, Kyodo News reported.
Earlier in the day, Japan's Deputy Foreign Minister, Yasuhide Nakayama, said that the situation with the hostage had not changed, adding that the authorities continued to gather and analyze the latest information.
On Tuesday, a voice in another IS video, claiming to be Kenji Goto, warned that he and Royal Jordanian Air Force pilot Muath Kasaesbeh, also an IS hostage, would be killed within 24 hours if they were not exchanged for a failed Iraqi suicide bomber facing the death sentence in Jordan.
On Wednesday, a Jordanian government spokesperson said that the country was ready to release the Iraqi bomber in exchange for Kasaesbeh.