Iroshizuku is a well known line of inks from Pilot-Namiki with a broad range of colors. I have a number of different bottles yet have reviewed only a few. Hopefully I'll be able to keep my hand off my other inks for a little while, but I can't count on that. There are a couple browns in the line. I used the following papers along with the codes: MvL=Mohawk via Linen, Hij=Hammermill 28lb inkjet, TR=Tomoe River. And also Moleskine. The pen I used was a Pelikan M201 with a B nib, so a bit of a stress test for this ink, since I usually prefer M and F nibs. Since I only have the iPhone 4 as a camera the photos are not as great as they could be. Typically the ink shows as darker than it is in real life. You can always check the swabs and the samples are the various online vendors, as well as other reviews here at FPN and other places on the web. Moleskine is well known to deaden an ink and rob it of its color. But the Yama-guri held up reasonable well, and given the kind of nib, did not produce much bleed through at all, just a few stops. I'd consider that very good behavior. Reasonably water resistant with some reddish wash, leaving behind some brown. The water drop chromatography is somewhat unusual being mostly orange, violet, and the indeterminate brown.