A month later. Genji Takiya has graduated. New fights begin to see who will climb to the top at Suzuran High School. Meanwhile, a battle against nearby Kurosaki Industrial High School begins.

This adaptation to a popular manga is the story of a contemporary teenager travelling back in time to the Sengoku period of the sixteenth century. There he meets with the historical figure Oda Nobunaga who instills in him the mission to deliver peace to Japan. Being aware that Oda may soon die, and the plot that accompanies the occurrence, the protagonist debates altering the outcome of what may yet come to be.

The movie begins in the year 1995 where there were 5 peculiar murder cases. The murderer would always get someone close to the victim to witness how he would strangle the victim from behind with a rope but he would let the witnesses go and speak to the media on how the murders happened. Ito plays the role of Makimura, the police detective who was in charge of investigating the serial murders but failed to catch the cunning murderer and his respected superior ended up being killed as well. 22 years later in 2017 when the case is nearing its statute of limitations, a man named Sonezaki claims to be the culprit for the 1995 murders and even publishes a book titled "Watashi ga satsujinhan desu" to talk about the cases. Despite the disgust towards Sonezaki's actions, the intensive attention showered on him via the media and SNS makes him become the talk of town.

When the Amago samurai withdraw their protection of the village of Tatara, famous for their manufacture of the legendary swords, the younger generation - erroneously - believe that guns will suffice.