Kato Hiroshi and Nakama Toru are the focal point of the storyline, as they are known for their mischievous behavior and fighting skills during their high school years. Their distinctive looks, such as their permed hairstyles from the 1950s and exaggerated behavior typical of the manga's style, add a touch of humor and flair. The series also features a diverse cast of eccentric individuals, all sporting eccentric fashion and hairstyles, reminiscent of the amalgamation of "Fight Club" and "The Breakfast Club."