This is one of 2 grey inks in the Pilot Iroshizuku series. The other grey ink being Fuyu Syogun. I have purchased Pilot Iroshizuku Fuyu Syogun very early in my foray into the world of fountain pens. My verdict of it was far from favourable. My main complaint was the colour was too light. Fuyu Syogun is a grey with cooler undertones while Kiri Same has warm undertones. That's about the main difference between the two grey inks.
Kiri Same is too light for my taste and I don't recommended for everyday use. I prefer my greys darker like J. Herbin Stormy Grey. Regardless, Kiri Same is well bahaved and easy to wash out from the pen. It shades from a light warm grey to a darker grey.
Though this isn't my favourite grey I am sure there are others who disagree to that end I am giving away a mini bottle of 15ml Pilot Iroshizuku Kiri Same. This giveaway is limited to people residing in Singapore. All you have to do is leave a comment below, telling me what is your favourite grey ink. The giveaway ends 30 March midnight.