Seems like this refers to Japan's victory over Germany in FIFA championships.

I thought, that Samurai Blue's victory over Germany would spawn lots of fanart, but there's nothing really yet. I guess, because soccer is not the most popular sport in Japan.

kemi242 said:

I thought, that Samurai Blue's victory over Germany would spawn lots of fanart, but there's nothing really yet. I guess, because soccer is not the most popular sport in Japan.

So far it's mostly Umamusume's Eishin Flash getting egg on her face.