Soba - Noodle
Correctly speaking, this Japanese noodle is "Nihon-Soba" and Chinese noodle is "Chuhka-Soba" which can be noodle soup such as Ramen or chinese fried noodle.
So, the noodle with backsheat flower is Japanese original noodle.
We eat either cold with sauce to dip or as soup, but almost never fried.
It is healthy, however there are many people who have allergy againt the backwheat flower.
Just like the pasta chuta or pasta crudo, there are factory made dried noodle and handmade fresh noodle. One way to see the quality of the dried Japanese soba is a colour. Usually the one with dark coulour has inferior quality.