Candy,
Thought that might be the case. I'm hoping to emulate this style on my Arakawa. If you look at your tree, it's been trunk chopped, apparently, then leaned to the right. The "straight boring" patch is there, only well disguised by the slant and chop and subsequent leader and branch growth. The leader and banches were probably wired while still thinnish to incoporate the curves. A very nice job and a graceful natural tree out of mateiral that was probably angular and not very graceful to begin with.
I am close to chopping my inground arakawa next year. It's currently 12 feet tall and 4" or so at the nebari to the branch closest the ground, which would make the tree less than a foot tall. A chop not for the faint hearted
Also, if anyone is considering working with this cultivar, you shold note that the rough bark that the tree's most notable feature takes more than few years to develop. It happens slowly on the oldest portions of the tree. "New" branching younger than five yeas or so may be completely smooth skinned and green.