I was looking for a medium-dark brown to match my Lochby Field Journal, and have had good experiences with other Iroshizuku inks. The Yama-Guri goes very well with the journal and looks wonderful on a cream-colored paper. As a lefty over-writer, the dry time for some inks has been a problem - and I was pleasantly surprised to find that this ink dries very quickly. I've had no problems with smeared ink.
I absolutely adore the color & the dignified way that it looks on paper.