Hello again. This is another review of a Sailor custom ink for the Bungubox store in Japan. It's king of strange to actually have bought a custom black ink from Japan when I could have bought a bottle of Sailor Jentle Black for less than half, or Sailor's nano-pigment black Kiwa Guro for a bit less than the custom ink. And I would not have had any issues with those inks and they are readily available.
But it was available and I like black inks. The usual papers apply here: Mohawk via Linen, Hammermill 28 lb inkjet paper, and Tomoe River.
Overall the ink is really wet and quite dark. A good solid black ink. Not sure when this ink will be available again. Bungbox isn't currently having their full lineup available, and while a black ink may be great for Japan, it's hard to say whether it would get much interest here.
There is a little bit of shadiness on the MvL, but that doesn't come across in the photo at all.
The ink blot shows a big of a greyed blue similar to OS Carbon, which I recently reviewed.
Not bad resistance to water, but the ink isn't claimed to be such.