what... why.

I feel like there must be a joke I'm missing here...

That thing that looks like Sumireko is the little mochi-face from the cover of LoLK. I think this is the artist having some fun on how ULiL and LoLK are related.

Tapper said:

That thing that looks like Sumireko is the little mochi-face from the cover of LoLK. I think this is the artist having some fun on how ULiL and LoLK are related.

It's also Sumireko's appearance when Mamizou transform her with her powers in ULiL.

[KN] said:

It's also Sumireko's appearance when Mamizou transform her with her powers in ULiL.

Oh, I wasn't aware of that part. I rarely play the fighting games.