Other dip pens need to be re-inked every few words, but we wrote an entire 5" x 7" notebook page on a single dip in Kakimori Pigment Ink.

Actually, complete history of innovation in pencils in Japan. For some years I wanted to get my hands on one of these, but it was hard to justify it. I have so many pencils left over from school days, my pencil consumption rate, which is probably higher than yours, is low, and I'll probably never finish them all. But maybe there's truly some magic in those Mitsu-Bishis?