You appear to have run into the procession for the yearly festival of Hanazono Jinja (花園神社例大祭) in Kabukicho, Shinjuku, which was held this year on Sunday, May 28: http://www.hanazono-jinja.or.jp/mt/schedule/
Note the 雷電 (Raiden, “Thunder and Lightning”) logos on the happi coats of the bearers of the o-mikoshi portable shrine.
Incidentally, the mural in Oshiage Stn is called Edo no Matsuri (江戸の祭, “Festival of Old Tokyo”) and depicts a generic traditional festival, not any specific event: http://www.tokyo-d-plex.com/~yukomiki/station/others.html
Perhaps the biggest festival in Tokyo at the end of May is the Sanja Festival. If you were in Asakusa, then that is probably the right answer.
Apparently, as you were in Shinjuku, the Hanozono festival is also possible.
Credit:stackoverflow.com‘
5 Mar, 2024
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5 Mar, 2024