A Yakuza member gripes about their clan being villainized due to recent legislative changes, yet Rojiya, one of their own, insists that such labels won't alter their way of life. The lieutenants of the Abegawa Tenchu Gang, each endowed with extraordinary quirks, are prone to explosive violence, unleashing their abilities in battle without hesitation. Today, however, their adversaries are well-prepared for this tactic.
In a flash, Stendhal shatters their window and disables them within moments, his sinister method involving licking their blood to induce paralysis. This revelation unmasks him as the emerging villain known as Hero Killer: Stain. Subsequently, he reconvenes with Kuin Hachisuka, who had supplied him with the yakuza's blood. Though he intends to continue accepting her assistance, he harbors a dark plan to eventually hunt her down for her villainous deeds.
Elsewhere, Soga and his companion visit Tokage, a lizard-powered member of their group, at the hospital. They reminisce about their previous use of Trigger and the powers it bestowed upon them, regarding it as a cautionary tale to never attempt such a feat again, given that Tokage had narrowly escaped death. As they chuckle about the ordeal, Soga's demeanor remains sober.
Later that night, Soga meets with Hachisuka, who pouts about his failure to bring along his other companions. Just then, Stendhal emerges to prey on him, realizing too late that this was all a setup. Undeterred, Soga refuses to resort to Trigger once more and readies himself for combat using his inherent abilities. Nonetheless, the girl isn't pleased with his decision and forces a swarm of bees upon him, drugging him against his will, transforming the scene into one of chaos and peril.
As he morphs into a colossal porcupine, memories of constant scrutiny based on his appearance and mannerisms flood his mind. Like Stendhal, he has been labeled a villain throughout his life, despite never committing any misdeeds. Just before the impending clash escalates, the Crawler interjects, attempting to defuse the tense atmosphere. Yet, as anticipated, Stendhal declines, unleashing a fierce strike that slashes Soga's chest with unyielding force. Koichi, realizing the vigilante's intent to terminate Soga, dashes to his aid without hesitation. Even after Stendhal throws a knife embedding in his leg, the lad persists in transporting the monster to safety. Fortunately, just when it seems all hope is lost as the assassin incapacitates Koichi, Knuckleduster arrives on the scene.
Stendhal endeavors to persuade Knuckleduster to avoid confrontation, insisting that his sole target is Soga. However, his pleas fall on deaf ears. Knuckleduster responds by casting a wire onto the ground, challenging the assassin to flee or attempt to cross it. As Stendhal gathers momentum to reach the vigilante more swiftly, Knuckleduster anticipates his move, delivering a punch straight to his face.
Knuckle reveals to Koichi that some individuals employ masks to embody a different persona, feeling as though they transform into a distinct and formidable entity while wearing them. This revelation serves as a jarring awakening for Stendhal, albeit in a twisted manner, as he realizes that there exists an entity even more dreadful than villains: sham heroes. Gratitude flows from him as he acknowledges the vigilante and speeds away to his lair.
Stendhal gazes at his reflection in the mirror, unveiling a novel world before his eyes. He confides in his mirror image about his false self, asserting that he now understands everything. Kuin attempts to interrupt, but her interruption earns her a fatal blow—a knife piercing her skull. In a maniacal fury, he mutilates his own face, tearing off his nose, declaring that he no longer requires a mask.
As he exits, he vows that the only traces he will leave are the bloody stains marking his path. Astoundingly, despite Stendhal plunging the knife into Kuin's empty eye socket, she still retains a spark of life.
