Chapter 1025 is titled "Twin Dragons Painting".
Kaidou unleashes brutal attacks against Yamato as he derides his daughter for walking alone, although Yamato disputes this, saying she found friends in Ace, the samurai in the cave, and everyone else who has helped her throughout the past two decades. Meanwhile, Luffy struggles to get Momonosuke to shake off his fear of heights and fly up to Onigashima. Momonosuke gets up into the air, but his fright causes him to crash into the Skull Dome and go on a path of destruction in Kaidou's fortress, leaving everyone in great shock. Eventually, however, Momonosuke and Luffy make it up to the roof, and Luffy and Yamato hit Kaido with powerful attacks simultaneously. Kaidou is immediately intrigued by Momonosuke, who proudly declares who he is despite his fear, and the Emperor activates his own dragon form as he confronts Momonosuke and Luffy.
Luffy tries to get Momonosuke to start flying, but since he is still a child mentally, he hesitates because of his fear of heights, earning him some insults from Luffy since he is technically an adult. All the while, Shinobu and the Heart Pirates watch this rather awkward exchange between the two.
On top of the Skull Dome, Kaidou and Yamato finish their clash, with Yamato revealing she covered herself in some type of glass to protect herself. She then jumps into the air and attacks Kaidou with Himorogiri, knocking his head into the ground. As he gets back up, he tells her that the way she defies him almost insinuates that she is from Wano, but he yells that no matter what she does, everyone will recognize her as his child and the samurai will never accept her. Yamato retorts that the statement has nothing to do with anything, but Kaidou says she spent her life crawling around the island hoping to escape because she is alone. Yamato yells she isn't alone because she had friends, but Kaidou retorts that everyone who ever showed her compassion is dead now, like Ace and the samurai who fed her in the cave. After Kaidou knocks her into the ground, Kaidou claims that the samurai's acts of kindness were phony and that everyone was afraid of her for being the offspring of a demon, which he says is her purpose in life.
Luffy finally gets Momonosuke to start flying and he immediately starts heading towards Onigashima, particularly to the roof. Unfortunately, Luffy learns Momonosuke is flying with his eyes closed, causing him to accidentally crash into the Live Floor and shocking everyone present with both of their appearances. Having lost complete control, Momonosuke starts flying everywhere and tearing up the castle, even tearing through the second floor and surprising Kid, Law, and Big Mom. They eventually do reach the third floor as the Beasts Pirates clamor in confusion over the presence of a second dragon.
Eventually, the two reach the top of the Skull Dome, just as Yamato, who has reverted back to normal, charges at Kaidou with Shinsoku Hakujaku. At the same time, Momonosuke starts to land as Luffy goes into Gear Fourth: Snakeman, and strikes Kaidou with Gomu Gomu no Jet Culverin. Both attacks end up hitting Kaidou as Luffy and Yamato greet each other, with Luffy thanking Yamato for keeping Kaidou busy. Kaidou recovers and turns into his dragon form, questioning how Luffy is still alive and who the new dragon is. Luffy yells to Kaidou that he won't die because he will be the Pirate King as Momonosuke introduces himself, surprising everyone as Kaidou tells Momonosuke that the world doesn't need another dragon.
- Yamato's fight with Kaidou continues.
- Yamato uses a technique to shatter skin that took damage, and attacks Kaidou.
- Luffy is riding Momonosuke in his dragon form, and the two reach Onigashima.
- They pass through the castle, shocking everyone who sees them, due to Momonosuke closing his eyes from his fear of heights and crashing through the floors.
- They end up on the roof just as Yamato attacks Kaidou.
- Luffy joins Yamato and attacks Kaidou.
- Kaidou transforms into his dragon form and confronts Momonosuke and Luffy.
- The title of the chapter is a reference to Junsaku Koizumi's "Twin Dragons" painting in Kennin-ji temple.