Tombow Pencil MONOGRAPH 0.5 Limited Edition Design Collaboration with Furukawa Shiko "Blue" This is a limited edition design of the MONOGRAPH 0.5 featuring illustrations of the MONO eraser. It is sold only at a limited number of retailers and is not widely publicized even by the official company. The MONO eraser illustrations serve as an accent, creating a very cute design. If you purchase multiple colors together, you will receive a 100 yen discount per pen.