The late Tokugawa shogunate has caught the virus of political correctness! Indeed, why wastefully swing a sword and burn foreign disease when one can creatively use the experience of the Gaidzinos and brain‑wash one's subjects? This is exactly what the authorities of alternative 19th‑century Japan do, touring the country with the Shinsengumi—a group of slick guys whose "heavenly songs" relax the soul and deprive people of the will to think about a better life. Other musical creativity is strictly forbidden, and tragic warriors of our history in this world jump on stage and bring to the feet not corpses of enemies but thousands of maiden hearts! But a new era is already knocking on the door, roaring and suffering to create its own melody—rock, herald of change! Unknown but talented samurai Ryouma Sakamoto, on such an occasion, swapped the dark clothes of our world"s conspirator for a bright costume of the first Japanese rock star, and his sword for a guitar. Now, with the help of best friends Sinsaku Takasugi and Kogoro Katsura, the young musician will strike heavy rock against cunning brain‑washers and cheap pop in three chords! The efforts of Hidzikata, Okita and their gang of bunny boys will not help the last shogun Yosinobu: for rock is music of freedom, and proper metal wins everywhere—on stage and on the battlefield.