- "This pencil carries the curse of a three-year ronin! Don't think it will break so easily!"
- —Motoko Aoyama
This Mechanical Pencil was used by Keitaro Urashima during his years as a Ronin, studying to get into Tokyo University.
After finally passing the exam, he passed the pencil on to Motoko Aoyama, who herself was studying to get into the university (Ch.108). Due to the spiritual impressions within the pencil she was able to use it briefly to block a strike from her sister's sword without it breaking.