Summary
Jiisama is a character who makes his debut in the seventeenth episode, titled "Pickers of Empty Cocoons." He possesses the unique ability to utilize a specific kind of mushi cocoon for the purpose of delivering correspondence. However, despite possessing extensive experience in his line of work, he failed to safeguard his two young apprentices, Ito and Aya, from a tragic fate inflicted by these mushi.
