This crochet chart can be downloaded free from Amuuse (Hanamaka). On the Amuuse page, click on the pink button that shows "レシピ" to download it. I used Lily Sugar and Cream yarn and a H hook for this project.
I must say this can be challenging to crochet unless you read Japanese language even with the 4 charts, but it's so worth trying, don't you agree? :)