The episode begins with a tense atmosphere as the leaders of the Marines and the Whitebeard Pirates prepare for an imminent clash. The scene opens on the battlefield at Marineford, where the Marines are mobilizing their forces, and the Whitebeard Pirates are making their approach. The camera pans over the massive Marine fleet, showcasing the imposing battleships and the soldiers readying themselves for battle. The tension is palpable as both sides are aware that a significant confrontation is about to unfold.

As the Whitebeard Pirates arrive, the focus shifts to Whitebeard himself, who stands tall and resolute on his ship, the Moby Dick. He declares that he will not allow anyone to take his family away from him, emphasizing his determination to rescue Portgas D. Ace. The emotional weight of his words resonates with his crew, who rally behind him, ready to face the Marines. The scene captures the fierce loyalty and camaraderie among the pirates, highlighting their shared goal of saving Ace.

The narrative then transitions to the Marine side, where Admiral Akainu, also known as Sakazuki, is introduced. He is shown as a ruthless and uncompromising leader, embodying the Marines' resolve to eliminate the pirate threat. Akainu's cold demeanor and fierce ambition are evident as he prepares to confront Whitebeard and his crew. The Marines are shown strategizing, with Vice Admirals and other high-ranking officers discussing their plans to counter the Whitebeard Pirates' assault.

As the battle begins, the first clash occurs when the Whitebeard Pirates launch their attack on Marineford. The pirates charge forward, and chaos ensues as they engage the Marines in fierce combat. The animation captures the intensity of the battle, with explosions and the sounds of clashing steel filling the air. Key members of the Whitebeard crew, such as Marco and Jozu, showcase their powerful abilities, taking down Marine soldiers and creating openings for their comrades.

In the midst of the chaos, the focus shifts to Luffy, who is determined to reach Ace. He is shown fighting his way through the Marine ranks, displaying his tenacity and resolve. Luffy's internal struggle is evident as he recalls his promise to Ace, fueling his determination to save him. The emotional stakes are high as Luffy navigates the battlefield, dodging attacks and pushing forward despite the overwhelming odds.

As the battle rages on, the scene cuts back to Whitebeard, who confronts the Marine Admirals. He declares that he will not back down and challenges them directly. The confrontation is charged with tension as Whitebeard's presence commands respect and fear. The Marines, particularly Akainu, respond with hostility, and a fierce exchange of words occurs, highlighting the ideological clash between the pirates and the Marines.

The episode also delves into the backstory of Ace, revealing his connection to Gol D. Roger and the implications of his lineage. This revelation adds depth to the conflict, as the Marines seek to execute Ace not just as a pirate but as the son of the Pirate King. The emotional weight of Ace's fate hangs heavily over the battlefield, driving the motivations of both the Marines and the Whitebeard Pirates.

As the battle continues, the focus shifts to the various skirmishes taking place across the battlefield. Key moments include Marco using his Phoenix powers to protect his crew and Jozu's incredible strength as he takes on multiple Marines at once. The animation highlights the unique abilities of each character, showcasing their fighting styles and the stakes of the battle.

The climax of the episode builds as Luffy finally reaches the execution platform where Ace is held. The emotional reunion between the brothers is charged with tension, as Luffy expresses his determination to save Ace. However, their moment is interrupted by the arrival of Akainu, who taunts Luffy about Ace's fate. This confrontation escalates quickly, with Luffy's anger boiling over as he prepares to fight Akainu.

The episode concludes with a cliffhanger, as the battle reaches a fever pitch. The stakes are higher than ever, with the fate of Ace hanging in the balance and the clash between the Whitebeard Pirates and the Marines intensifying. The final scenes leave viewers on the edge of their seats, eager to see how the conflict will unfold in the episodes to come.

In the ending of One Piece, Season 13, Episode 490, the stage is set for a monumental clash between powerful leaders as the world stands on the brink of a new era. The episode culminates in a tense standoff between the Marines and the Whitebeard Pirates, with the fate of Portgas D. Ace hanging in the balance. The episode concludes with the arrival of the Whitebeard Pirates at Marineford, signaling the beginning of a fierce battle that will change the course of history.

As the episode unfolds, we see the tension build at Marineford, where the Marines are preparing for the execution of Ace. The atmosphere is thick with anticipation and dread, as both sides are aware that the stakes are incredibly high. The camera pans over the assembled Marines, led by Admiral Akainu, who exudes a cold, ruthless confidence. The Whitebeard Pirates, on the other hand, are filled with a sense of determination and camaraderie, ready to fight for their captain and friend.

The scene shifts to the execution platform, where Ace is shackled and awaiting his fate. His expression is a mix of resignation and defiance, knowing that his brother, Monkey D. Luffy, is on his way to rescue him. The emotional weight of the moment is palpable, as Ace reflects on his life and the bonds he has formed with his crew and family.

As the Whitebeard Pirates make their entrance, the ground shakes with the force of their arrival. Whitebeard himself stands tall, a symbol of strength and leadership, rallying his crew with a powerful declaration of their intent to save Ace. The Marines respond with a show of force, and the tension escalates as both sides prepare for the inevitable clash.

The episode ends with a powerful visual of the two sides facing each other, the air crackling with energy and the promise of chaos to come. The final moments are filled with a sense of urgency and impending conflict, leaving viewers on the edge of their seats, eager to see how the battle will unfold and what it will mean for the future of the world.

In summary, the episode concludes with the stage set for an epic confrontation, highlighting the themes of loyalty, sacrifice, and the struggle for freedom that are central to the One Piece narrative. The fate of Ace, Luffy, and the Whitebeard Pirates hangs in the balance, as the world braces for the dawn of a new era.

In episode 490 of One Piece, titled "Mighty Leaders Face Each Other Down! Heralding the 'New Era'!", there is indeed a post-credit scene.

As the episode concludes, the screen fades to black, and a brief scene unfolds. The focus shifts to a serene ocean view, where the camera pans over the waves, creating a sense of calm after the intense events of the episode. Suddenly, the scene transitions to a close-up of a newspaper being held by a character. The newspaper headline boldly announces significant news regarding the ongoing war and the actions of the Whitebeard Pirates, hinting at the monumental shifts occurring in the world.

The character holding the newspaper is revealed to be a member of the Revolutionary Army, showcasing their interest in the developments surrounding the Marineford War. This moment serves to emphasize the growing tensions and the impact of the events on the world at large, setting the stage for the new era that is about to unfold. The scene encapsulates the anticipation and uncertainty that looms over the characters and the world of One Piece, leaving viewers eager for what lies ahead.

The 'New Era' is a pivotal theme in this episode, symbolizing the shift in power dynamics within the world of pirates. Characters like Whitebeard and Shanks discuss the implications of this new era, suggesting that the balance of power is changing. This concept resonates deeply with the characters' motivations, as they grapple with their legacies and the future of piracy. The phrase encapsulates the hope and uncertainty that permeates the battle at Marineford.

In episode 490, the tension escalates as Whitebeard, the legendary pirate, faces off against the Marines. The scene is charged with anticipation as Whitebeard declares that he will not allow anyone to take Ace's life. His presence is commanding, and the Marines, led by Admiral Akainu, prepare for a fierce battle. The visual spectacle of the two sides clashing is intense, showcasing the might of Whitebeard and the determination of the Marines.

Luffy is filled with a mix of determination and desperation as he witnesses the chaos unfolding at Marineford. His emotional state is palpable; he is driven by the need to save his brother, Ace. Luffy's resolve is highlighted as he pushes through the ranks of Marines, fueled by his love for Ace and the urgency of the situation. His internal struggle is evident as he grapples with the overwhelming odds against him.

Shanks makes a significant appearance in episode 490, arriving at Marineford just as the battle reaches its peak. His presence is both calming and authoritative, as he seeks to prevent further bloodshed. Shanks embodies the ideals of a true leader, and his conversation with the Marines and Whitebeard hints at the larger implications of the conflict. His calm demeanor contrasts sharply with the chaos around him, showcasing his strength and wisdom.

The other pirates rally around Whitebeard's declaration, feeling a surge of hope and determination. His words resonate with them, igniting their spirits as they prepare to fight against the Marines. The camaraderie among the pirates is palpable, showcasing their loyalty to Whitebeard and their shared goal of protecting Ace. This moment highlights the bond between the pirates and their willingness to stand together against overwhelming odds.

In episode 490 of One Piece, titled "Mighty Leaders Face Each Other Down! Heralding the 'New Era'!", there are several elements that may be considered objectionable or upsetting for children or sensitive viewers:

1. Violence and Combat: The episode features intense confrontations between powerful characters, showcasing battles that may include physical harm and aggressive behavior.

2. Emotional Turmoil: Characters experience significant emotional distress, including feelings of despair, anger, and determination, which may be intense for younger viewers.

3. Death and Sacrifice: Themes of mortality and the sacrifices made by characters for their beliefs or comrades are present, which could be heavy for sensitive audiences.

4. Dark Themes: The overarching narrative involves themes of imprisonment, oppression, and the struggle against authority, which may be unsettling for some viewers.

5. Intimidation and Threats: Characters engage in threatening dialogue and displays of power that could be frightening or distressing.

While the show is generally aimed at a younger audience, these elements may require parental discretion depending on the viewer's sensitivity to such themes.