Even without Reimu-A, it's just grazing, and the path isn't really particularly hard to memorize or execute. Unless, of course, you absolutely insist on grazing the huge fairies because it looks cool.
On another note, couldn't they just have left out goddamn flying in 10.5 and 12.3? I thought Reimu's controls were awkward and hindered my ability to carelessly jump without having to worry about flying by accident, but Sanae's controls are atrocious, Jesus Christ, worst flying experience since Microsoft Flight Simulator. I seriously hope this gets better once I've got the hang of it.