The fountain pen is kaigeiu308, not ink. A Waterman ballpoint pen. The Cocoon is the one my sister got for her coming-of-age ceremony, and I got it after that. The dark 0.5 mechanical pencil I bought at the Mirai Bookstore as a bonus is too easy to write with, seriously! They're expensive pens, but students don't really use fountain pens or ballpoint pens, and even though they're expensive, I'm making them cheaper so you can buy them sooner. Price reduction is fine.