Kohakuto is a half-dried agar jelly, sweet and shiny like a jewel. Each pen comes in a gift set with ink from the Shikiori series, in a color that matches the pen. Wagashi - Japanese sweets Wagashi is one of the traditional Japanese sweets. It has changed and developed throughout Japan's long history and in many ways reflects the life of the Japanese people. There are five versions for which Sailor has made a pen.