This is an original ink made for Shumi Bun by Sailor. It came with my Sailor Pro Gear Realo that was sold exclusively by Shumi Bun Club. Shumi Bun Blue is a saturated and wet blue ink. It shades very subtly only. For corporate purposes, this is perfect but for me, I find the colour boring. But that’s just me. I find the ink a little on the too wet and takes too long to dry side. So I am constantly smearing the ink when I write.