Kirishima and Sugihara were childhood friends and ordinary boys who periodically teased and bullied each other. But after school, they didn't see each other for a while, until one day they met in the same dorm, turning out to be roommates. They continued to mock each other, as before, gave punches, slaps on the back of the head, and so on. Kirishima could also often take Sugihara by the hair or touch his hair without his consent. One day Kirishima said, "Hey Sugihara, go get me some instant noodles."