This book is completely dedicated to the folding of envelops.
A total of 20 different models are shown. Almost every model comes in two variants: once as a envelope and once as a rectangular chopstick holder. The output formats are different.
All models are folded from a single piece of paper and feature distinctive embellishments: hearts, maple leaf, turtle, crane, shamrock, helmet, flowers, sailboat, butterfly, cicada, elephant, bear, penguin, Christmas tree and Mount Fuji. On the first 20 pages all models are shown in photos.