Sin is the thirty-first episode of the 2003 anime, in which Envy tells Wrath the truth of his stolen limbs and origin, and Izumi confesses on Yock Island that she created the boy through a failed transmutation of her stillborn son.
In Central, a large force including the Mustang Unit deploys to the Southern Slums to seize Scar, and Fuery questions using force against Ishvalan refugees while Falman warns they may distrust the military after the recent mercenary attack. Rick and Leo hunt for Scar on their master's orders, and the exiled Ishvalan grows uneasy around Scar until he notices the tattoo. At Southern Command, Armstrong and Archer identify Kimbley, the former Crimson Alchemist, while Ed and Al hold Izumi back so Envy, disguised as Bradley, can spirit the boy away.
Izumi strikes at Armstrong with alchemy, but he counters, believing he is defending the true Fuhrer. As they fight, the brothers face Bido and Kimbley, and Ed works out the secret of Kimbley's explosive alchemy while Archer eavesdrops. In a storeroom, Envy tells the boy the truth of his stolen limbs and feeds him red stones, explaining that homunculi need them to live; the boy, Wrath, recovers his memories of the Gate.
Kimbley meets Archer, who offers to clear his crimes and reinstate him. The Elrics find Armstrong beaten, Izumi discovers the changed boy, and Archer learns the real Bradley never left Central. Realizing Izumi is gone, the brothers head for the Curtis shop, where Winry tells them of Izumi's human transmutation, leading them to Yock Island. There Izumi recalls the day of her attempt and moves to snap Wrath's neck, but hesitates while he taunts her to finish it. The brothers and Winry arrive by boat and save her as Envy looks on.
Izumi confesses she brought Wrath to the island to kill him, revealing she made him from her failed transmutation of her stillborn son and left him in the Gate, and that she cannot go through with it. Wrath tells Ed that homunculi arise from failed human transmutations, contradicting Ed's naive belief. Sloth travels to the island, Greed's group is met by Envy, and Sloth clears out the chimeras and Kimbley, prompting Greed to retreat rather than face two homunculi. Envy admits he only paired Ed with Wrath to watch him suffer. Wrath declares he will take the rest of Ed's body to become fully human, and Al steps up to fight in Ed's place to recover the missing limbs.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
In Sin, Envy reveals to the boy that his limbs were stolen from Edward and feeds him red stones, explaining that homunculi need them to survive, which restores the boy's memories of the Gate.
Izumi Curtis returns to Yock Island in Sin intending to kill the homunculus boy she inadvertently created, confessing she made him from a failed transmutation of her stillborn son and left him trapped in the Gate.
No, in Sin Izumi Curtis raises her hand to snap the boy's neck on Yock Island but hesitates and cannot bring herself to finish it, especially once Edward, Alphonse, and Winry arrive to stop her.
In Sin, the boy later called Wrath tells Edward that homunculi arise from failed human transmutations, directly contradicting Edward's earlier, more naive assumptions about alchemy.
Wrath declares in Sin that he will take the rest of Edward's body to become fully human, prompting Alphonse to step in and fight in Edward's place to protect his brother's remaining limbs.
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