This pen case uses the same numbers illustrated by Ryota Kishida for the 365 Days Techo Weeks 2022. Because the pen case includes an elastic band, you can attach it to your Weeks and carry a few of your favorite pens alongside your techo.
The front of the case features a colorful print of the illustrated numbers 1-12 by Ryota Kishida. Because the base color of the design is a semitransparent, milky white, you can slightly see the pens or other contents of the bag.
Ryota designed this cover because he had also written the page numbers by hand for his sister Nami Kishida’s book, I Love My Family for Who They Are. Ryota, who has Down Syndrome, was unable to write, but practiced until he could write the page numbers for her book. Shigesato Itoi loved his handwriting so much that he asked Ryota to contribute his writing to this 365 Days Weeks cover and this pencil case as well.