'Anonymous' is looking for a quilt pattern.

Someone ('Anonymous') left a comment on a blogpost from 2015.
She wanted to know the name of this patchwork block pattern on a quilt I had seen at Tokyo International Great Quilt Week 2015.

I have searched high and low, but not been able to find the name of the block.
Does any of my readers know? If so, please leave a message.

Using a graph paper and pencil one should be able to draw the pattern. I think this would be a good English Paper Piecing project.

So, Dear 'Anonymous', as I can't contact you by email, check back here later to see anyone has left a clue in the Comments.