This SnapShots in Akiba site
has some anime, game, or seiyuu related snapshots
taken while walking around in the Akihabara area.
Comments to snapshots@usagi.org.
In December 2020, there was a large advertisement outside of JR Akihabara
station for the Kimetsu no Yaiba collaboration in Granblue Fantasy.
The collaboration period was between 12/8 and 12/20.