Pilot Iroshizuku Kosumosu is the pink ink of the series. This is very much a pink ink. It doesn’t have too much red in it to push it into salmon or coral’s territory. It shades from a pastel pink to a hot bright pink. The shading is very nice and the ink stands out from the page. It’s dark enough to be readable on the paper. If you are looking for a pink ink, Pilot Iroshizuku Kosumosu should be on your list.
When compared to Momoji, Kosumosu is the softer pink. Momiji is stronger and has more red to it. However when compared to Tsutsuji which is also similar to Kosumosu, Tsutsuji has more purple to the colour.
My thanks to Sunny of Straits Pen for the sample of this ink.