I have a slight pink problem. I have little girls, let's blame it on them.
This ink performed really well. It dries really fast, is super saturated, and is surprisingly water resistant for a red. Also, it is seriously solid - really no feathering to speak of even on really poor copy paper. It's in my oldest's Pilot Kaküno so I snagged it for my second ever review - be gentle.
First image is a scan, second two are iPhone photos of samples on Rhodia and (bleep) copy paper.