Renowned as a brilliant strategist during the tumultuous Three Kingdoms era in ancient China, Zhuge Kongming finds himself gravely ill amid the chaos of the Battle of Wuzhang Plains. Laden with weariness and remorse from the unending conflicts, Kongming breathes his last with a fervent desire to reincarnate into a more peaceful time. His wish materializes, and he awakens in modern-day Tokyo, inhabiting a youthful body while retaining his memories. Adrift in this unfamiliar epoch, Kongming stumbles into a nightclub where he encounters Eiko Tsukimi, a talented aspiring songstress whose melodic performance enchants him. Sensing his disorientation, Eiko takes Kongming under her wing, introducing him to the contemporary world and kindling his passion for modern music. Impressed by Eiko's musical prowess, Kongming pledges to propel her to stardom, assuming the role of her dedicated manager. Though the cutthroat music industry spares no room for errors, Kongming remains resolute in his mission, drawing upon his strategic acumen from his past life to navigate this new battlefield.