Pilot Iroshizuku Shin-kai - Blue-Black Ink Size:50mL Bottle making it an ideal choice

making it an ideal choice for everyday writing

softened just enough to feel appropriate for everyday writing

and notes can survive everything from a rainy day to a coffee-spill disaster

UV exposure

This is the Kaweco AL Sport fountain pen

Pilot Iroshizuku Shin-kai - Blue-Black Ink Size:50mL Bottle making it an ideal choiceIroshizuku Shin kai (Deep Blue) is a blue black fountain pen ink. Pilot's Iroshizuku line of fountain pen inks are the gold standard for a reason. They're well behaved, wet writing, generally quick drying (<20 seconds), and come in an assortment of stunning colors. Because of how Iroshizuku inks tend to be, they can often be some of the most reliable inks to give you a great writing experience with dry writing pens (think Japanese <Fine> and <Extra