The third episode of Jigokuraku, "Weakness and Strength," delves deeper into the dynamic between executioners and criminals as the characters face the dangers of the mysterious island. Throughout the plot, the episode explores the nuances of relationships and the constant struggle between compassion and ruthlessness.

The episode begins with the team of criminals and executioners arriving on the island, where they quickly encounter its dangerous and bizarre inhabitants. At the heart of "Weakness and Strength" is the complex relationship between Gabimaru and his assigned executioner, Sagiri. Sagiri insists on keeping Gabimaru's hands bound—a decision that highlights the fundamental absurdity of their mission. The criminals are expected to survive and succeed on the island, yet the restrictions imposed by their executioner partners hinder their abilities.

Despite the questionable premise, the episode effectively explores the characters' inner conflicts. Gabimaru's refusal to kill Sagiri, even though it would be in his best interest, adds depth to his character. This moral dilemma demonstrates that even the most hardened criminals possess a sense of empathy and humanity. However, Gabimaru's hesitation to kill Sagiri contrasts with his ease in dispatching the island's monstrous inhabitants, making his character arc somewhat inconsistent.

In addition to Gabimaru and Sagiri, "Weakness and Strength" introduces other characters, such as Tamiya Gantetsusai and his young executioner Fuchi. They face off against one of the island's monstrous creatures—a butterfly with a human face—giving the audience a taste of the dangers lurking on the island.