Nobunaga is a childhood friend of Yto who attends the same private high school though is in the class next to his. He has a cheerful and openhearted personality gets very good grades and is considered a bishnen by the female students. However he is a hardcore otaku and is familiar with the layout of Akihabara. He is extremely famous in various places in Akihabara. Due to his enormous amount of purchases he is known as Emperor Caesar at the Animate store and is one of three people who possesses the golden Animate card. At a maid caf where Haruka once worked part time called Home Caf there is a picture of him shaking hands with the manager of the caf framed in gold with the caption Welcome home our greatest master hung in the center of the caf.