I’ve found this but it doesn’t look professional…
http://global.rakuten.com/en/store/sumitaya/item/10003216/?s-id=borderless_recommend_item_en
Do you know other kind of transverse flutes with fipple?
Thanks!
First clue should be the beginning English text: starts out with “Toys”. The Japanese text in the pic reads “omocha shinobue”. Omocha means “toy” as well, so we’ve got that squared away. You probably find these things hawked at every festival all over the country. So yeah, no. Not professional. A souvenir at best, nice and dirt-cheap, so if it gets botched up in the revelry, no one’s going to shed a tear. I remember festivals where you’d see cheap regular shinobue lying abandoned on the ground (I picked one up and tried it out; it played well enough), but it was 1992 and at the time I don’t recall seeing any of these newfangled fippled jobbies.
I’m still trying to come to terms with the whole concept. I thought the Japanese were sticklers about certain things especially in traditional performance contexts, but time moves on and apparently things do change.
I imagine they’re out there, but I wouldn’t have the first idea as to how to even initiate a narrow search.
Thanks for all your interesting informations, it’s a fascinating world.
I’ve found this but it’s a 5-hole flute with only one octave range, so I think it’s derivated from a native american flute:
http://highspirits.com/collections/spirit-flutes/products/spirit-flute-side-blown-key-of-g-japanese-scale
You’re all too kind. I’m sure I’ve bored everyone else to distraction. 
High Spirits flutes are a well known Native American Flute maker, but their sub company Spirit Flutes is not quite the Native American style. Spirit Flutes used to offer both side blown fipple and end blown fipple designs, but now just manufactures the side blown. While they do offer the most common Native American Flute scale - the minor pentatonic, which is surely not only Native American tuning as the minor pentatonic scale has been used around the world since ancient times (the shakuhachi is minor pentatonic) - but they also offer other world tunings.
As you seen they offer a Japanese folk scale being the Ritsu Gagaku - Yo scale. This is a pentatonic scale consisting of the root, second, fourth, fifth, and sixth. This same scale is also shared by some Chinese folk scales and India raga scales. IMO, it is not the most Japanese feel as there are more pentatonic scales that sound more Japanese authentic to the listeners ear. Though, it is still a Japanese folk scale as well.
Of course they offer other scales too. Their Middle Eastern is a nice one.
Now if you are wanting to get close to the Shinobue, their Major Diatonic would be the closest to traditional Shinobue tuning. You would just be missing the lowest pinkie finger hole which plays the seventh below the root.
The Spirit Flute design is exactly the same as pictured above in Nanohedron’s thread. You blow into the side directly into the hole and the air goes into an air chamber. Then, the air is directed through an air channel directed by a piece of wood/bamboo cover and then hits the splitting edge. Quite whistle like with the exception that the former uses an air chamber whereas the latter the air is blown directly to the splitting edge.
I hope this helps 
Edit - I just looked closer and I see that the whistle style Shinobue shown above does not use an added piece over the air channel before hitting the splitting edge. Thus, it would be more whistle like over the Spirit Flute. Though, the Spirit Flute is still very similar also being a fipple flute.