One possible reason could be to protect the village. Minato is known for his self - sacrificing nature. By sealing himself, he might be containing a great evil or power that could otherwise destroy Konoha. For example, if there was a powerful enemy or a dangerous jutsu gone wrong, sealing himself could be a last - ditch effort to keep everyone safe.
I found some recommended novels about villains breaking the seal. However, these results did not provide a clear answer. Therefore, I am unable to answer this question.
Naruto could also use his new jutsu or skills he has acquired. He might show Sasuke that he has become stronger and that they could face whatever Sasuke is running from together. He could block Sasuke's path physically and then start talking some sense into him, like how leaving won't solve his problems but will only create more.
One of the main similarities is their self - sacrifice. Minato sacrificed himself to save the village and his son. Naruto has also shown that he is willing to put himself in harm's way for the greater good. He's always the first to jump into a dangerous situation if it means protecting those he loves. Another aspect is their leadership qualities. Minato was a great leader as Hokage, and Naruto has developed into a great leader as well, inspiring those around him.
Kushina could be an important character even though she's dead in the original story. In this fanfic, her spirit or memories could play a role in Naruto's upbringing. For example, Minato could tell Naruto stories about Kushina's feisty personality and her love for the village.
In some fanfictions, Minato saves Naruto physically. For example, he might use his teleportation jutsu to appear right in the middle of a fight and whisk Naruto away from danger. In others, he could save Naruto spiritually. He might enter Naruto's mind, like in the fanfic 'Minato's Mind - Saving Mission', and give him the strength and confidence to overcome his inner demons. Sometimes, Minato saves Naruto from a political situation. For instance, in 'Minato and the Hidden Leaf's Politics', he uses his influence and wisdom to protect Naruto from being used as a political pawn.
The Thousand-foot Seal of the Sound of the River and Broken Shore was a casual seal that Deng Shiru had carved for Bi Mengxiong. It was considered one of Deng Shiru's representative works. This seal was engraved with a famous sentence from Su Dongpo's "Ode to the Red Cliff", and the edge recorded the origin of this seal. It was said that Deng Shiru baked the stone on the stove, and the stone pattern showed the picture of Red Cliff, so he carved Su Dongpo's famous sentence on the seal. This seal was now hidden in the Hangzhou Seal Museum, engraved on the side of the stone where the red spots were. The density of this seal was a classic. The left line was sparse, and the right line was sparse. It showed the effect that the sparse was even sparse, and the dense was even denser. This seal showed Deng Shiru's creative ideas and artistic accomplishments, and was considered a masterpiece.
Breaking the Heavens was a novel written by Qing Shen Xuan Zhang. The latest chapter of this novel was Chapter 327: Portal of Eternal Life, Advancing to Higher Dimension (Finale). The update date was December 4, 2021. Other than that, it did not provide any more information about breaking through the heavenly worlds and the Azure God Mysterious Seal.
The story could change in many ways. For one, Naruto's character development might take a different turn. Instead of being so focused on Sasuke, he could become more involved in the political aspects of the village. His relationships with other characters, like Sakura and Kakashi, might also change. Sakura might be disappointed at first, but then she could see Naruto's new perspective. Kakashi could be proud that Naruto is growing up and making his own decisions.