Potsupotsu (Pitter-Patter) – the color of icy lilac during a brisk winter rain. Designed as companion inks to the Sound of Rain fountain pens that Sailor released in 2021, these inks are named for the different sounds that rain makes as it falls. – Want to label your ink converter so you can easily identify the name of the ink? For your convenience, a set of small stickers are included with each bottle of ink.