The Pilot Kakuno Family Series is an adorable addition to the popular entry-level fountain pen brand. Each style in the Pilot Kakuno Family Series features a tinted demonstrator-style (transparent barrel/cap) body, and a different smiling face carved on the nib.
The Kakuno Fountain Pen is suitable for beginners, and even children can write comfortably with it. It features a smiling face on the nib, so that the smiling face is always facing you when you're holding the pen correctly. The pen body is hexagonal so that if you set it down, it won't roll away.
The name "Kakuno" is based on and pronounced the same as the words 書くの meaning "writing" and 6角の meaning "six-angles" corresponding to the pen's hexagonal shape.