Derpy

Derpy is depicted as a large, blue tiger with glowing yellow eyes and a snaggletooth grin. His defining characteristic is his clumsiness, as seen when he struggles to right an overturned flower pot. Despite this, he is portrayed as earnest and determined in his courier duties. Derpy acts as a bridge between Jinu and Rumi, delivering messages and notes between them. His presence adds a touch of humor and lightheartedness to the otherwise intense demon-hunting narrative.