BECK: Mongolian Chop Squad follows the story of Yukio "Koyuki" Tanaka, a bored 14-year-old boy who feels he has no real passion in life. His world changes when he saves a strange, charismatic dog named Beck from some bullies and meets its owner, the cool, half-American guitarist Ryusuke Minami. Ryusuke introduces Koyuki to Western rock music, especially the sound of the fictional band Dying Breed, inspiring Koyuki to learn guitar. Koyuki joins Ryusuke's struggling band, named Beck, and they work their way up from garage practices to playing small venues, facing fights, financial troubles, and creative clashes. The story is about their journey to form the ultimate rock band, with Koyuki discovering his own voice while chasing the dream of playing at the grand Greatful Sound music festival. Readers enjoy it for its raw, authentic depiction of teenage friendship, first loves, and the gritty reality of the music industry, alongside a compelling underdog story that captures the pure thrill of creating and performing music.