All eyes are on Kasen and Reika as the festival gets underway, but the young Ogamime apprentice is bent on escaping. And Tetsuo, fueled by a growing hatred for Goichiro, lurks in the shadows for an opportunity to kill the cult leader. With little more than a newfound thirst for vengeance, Tetsuo braves an army of villagers only to find out that the gang may already be one step ahead of him.

Seven years have passed since the massacre at the village took place, and although the Tosu family has once again found peace and joy in their lives, Shino and Kubo are still on the run. So when Tetsuo finds himself being framed for murder alongside whispers of Kubo's return, he begins to suspect his past has come back to haunt him. As Tetsuo braces for a rematch with Kubo, Reika, now a police investigator, defies orders by hunting for answers after an attack on her family hits too close to home.

With blood on his hands yet again, Tetsuo scrambles to pit the village against Kubo's armed men and spark a war that slaughters both sides. But first, he'll need to set the stage to frame someone for murder with his most potent weapon of all-his mind. And though gunfire filling the forest is music to his ears, he's unknowingly unleashed a monster with a thirst to kill.

A young Tetsuo opens his heart to Kasen, beginning their relationship, but the constant harassment from her family is ruining their lives. And when they try to do things the village's way, it only makes matters worse. If they're determined to spend their lives together and get married, they'll have to fight back by devising a plan as insane as the people of the village itself.

With their house bugged and under surveillance, Tetsuo hatches a plan to divert the suspicions of the gang…but not all of them buy it. The family now caught in a lie, Kyoichi pulls out all the stops to force out a confession from one of them…and he's not above abduction or murder. But just when all seems lost, Tetsuo forms an unlikely partnership, plunging him straight into a world of violence.

Tensions run high when Kubo comes for Tetsuo's head in the village where he, Reika, and Kasen are held captive…and Yoji is left wondering why Tetsuo is their target instead. But after discovering the true nature of the village, the gang gears up for war. Meanwhile, the Tosus plan their escape with help from an unexpected source…but whose motives may not align with their own.

As Kyoichi digs deeper and tries to find evidence of Nobuto's murder at Reika's apartment, Tetsuo and Kasen secretly scheme to thwart his investigation…but the supposed lady-killer has plans of his own-a secret date with Reika in hopes of revealing the cracks in her parents' plotting. But now that the Tosus have Kyoichi's address, their plans to frame him for the murder can move ahead…until someone shows up whom they don't expect.

Tetsuo's scheming pays off as the organization starts to question Kyoichi. He tries to plead his case, but all bets are off when Nobuto's bones are found where he least expects. Unsure who to believe, Nobuto's father takes it upon himself to find out who truly killed his son…and to avenge him by slaughtering their entire family. What he soon discovers leads to a showdown at the place it all began.

As the gang rolls into the village to take Tetsuo's head and the village's wealth, Kenshin lies in wait, ready to detonate his makeshift bomb and get revenge for his father. Refusing to let his family be pawns in the village's cult, Tetsuo plots to rescue Kasen and Reika and escape before the gang kills them all. However, after he witnesses something truly vile, he's fully prepared to scrap his humanity and embrace his inner monster if it means saving his loved ones.