Yoshito grew up with his mother Yasue after his father passed away. His mother ran a yakiniku (grilled meat) restaurant that his father had left behind. Yoshito enjoyed eating his mother's cooking and their restaurant was loved by many people. Things changed after popular food critic Furuyama Tatsuya published false statements about their yakiniku restaurant. Due to that, their restaurant saw a sharp drop in customers. Yasue worked hard to recover business for the restaurant. Due to Yoshito's behavior in wanting attention from his mom, Yasue decided to shut down the restaurant. 18 years later, Yoshito lives alone and he works as a freelance writer. One day, he takes work for a new online foodie website. He works with editor Takenaka Shizuka. Their first assignment involves yakiniku. Around that time, Yoshito hears that his estranged mother Yasue has collapsed.

Masami is a guitarist who dreams of his band “Rhythm Head” winning the Grand Prix at the Japan Music Carnival. History, and the warlords of 16th century feudal Japan are the very last thing on his mind. But when Rhythm Head are performing in Nagoya, a mysterious lightning strike causes not only a power blackout, but also a “time slip”, in which two of Japan’s preeminent samurai-era figures, Nobunaga Oda and Hideyoshi Toyotomi are transported to present day Japan. To Rhythm Head’s manager, the duo are the perfect vehicle for the band to transition to an idol group, increase their chances of becoming famous, winning accolades and taking away the Japan Music Carnival top prize. Could this be the beginning of a new type of music, courtesy of a brand new band Samurai Rock?