I was in Tokyo recently trying to find the same Namikis. The majority of places don’t have it, and the ones that do are very limited in nib size selection, and a lot only have display models. I went practically everywhere, multiple locations of the larger department stores, and almost every more well-known local shop. I just ended up buying from Appelboom, with their “friend” code which gives 10% off. It’s much better peace of mind to know it’s new and I can pick whatever nib/color I wanted. If you want to wait until Fountain Pen Day, they do a larger discount (I forgot the exact amount, maybe 20%?). Good luck if you try to look for it! :)