One idea could be that Jiraiya focuses on Naruto's rasengan training in a more extreme way. He takes Naruto to a secluded place full of natural challenges like strong water currents or rocky terrains. There, Naruto has to constantly adapt and use his rasengan in different situations to overcome obstacles. Another plot could involve Jiraiya teaching Naruto some secret clan jutsus that he discovered during his travels, which could give Naruto an edge in future battles. And also, Jiraiya could train Naruto in stealth and espionage skills, which are essential for a shinobi but Naruto hasn't had much focus on before.
A possible plot is that Jiraiya trains Naruto to better control the Nine - Tails' chakra. He uses some ancient sealing techniques he learned to create a special training ground where Naruto can safely practice drawing on the Nine - Tails' power without losing control. This training also includes mental exercises as controlling the Nine - Tails is not just about physical strength. Another aspect could be Jiraiya teaching Naruto about different types of chakra natures and how to combine them in new and powerful ways, similar to how he has seen other great shinobi do during his adventures.
Chapter 224, "Cold Resistance Level Classification, Gains and Persuasion", is the clearest early answer because Brother Hou finally turns buildup into a real advancement. The chapter turns that into something concrete by moving from After finishing his speech, Xia Hong appropriately showed a sense of... to My camp's method of boiling Jade Bone is somewhat outdated, so I....
Chapter 302, "Signs of Defeat Emerge, Snow Bamboo's Backup Plan", is the clearest early answer because it turns Great Xia's situation into a concrete plot event. The chapter gives readers a real answer by opening on Xia Chuan's roar and the teasing from Yuan Cheng and the other Cold... and ending on Furthermore, as he kept pushing outward horizontally, the breach....
Chapter 338, "Rapid Progress, Martial Arts Skills, Dual Advance Eastward, Dormancy Period", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter gives readers a real answer by opening on Lu Yang nodded, then continued speaking after sitting down: "Beining... and ending on What I found out is that besides a population of over 20,000, a....
Chapter 309, "Gamblers at the End of the Road, Li Family's Swan Song", is the clearest early answer because it turns Great Xia's situation into a concrete plot event. The chapter gives readers a real answer by opening on The disciples of the Li Family, upon hearing these words, immediately... and ending on Why would they risk everything to gamble with you?" Li Xuanping,....
Chapter 294, "Empty-Handed, With Belated Realization (Part 2)", is the clearest early answer because it turns Li Xuantiang's situation into a concrete plot event. The setup is Everyone's expressions were shaken due to the unfamiliar faces among..., but the pressure keeps building through Why are the Cold Resistance Level elites of Great Xia all so young?"....
Chapter 256, "Yuwen Dao's Speculation and the Jade Bone Medicine (Part 2)", is the clearest early answer because the rescue effort creates visible on-page results. The chapter turns that into something concrete by moving from Furthermore, Yuan Cheng told me that on the night the White Dew... to But as soon as Xia Hong spoke, Xia Chuan immediately stopped him..
Chapter 272, "Loss and Surprise, Surge in Cold Resistance Level Participants (2)", is the clearest early answer because Cold Resistance Level finally turns buildup into a real advancement. The chapter turns that into something concrete by moving from Luo Cheng was staring at the ranking board, looking very tense. to His adaptability was quite good, but after all, he had only been in....
Chapter 305, "Twists and Turns, Severed Arm and Head, Forced Withdrawal", is the clearest early answer because it turns Cold Beasts's situation into a concrete plot event. The chapter gives readers a real answer by opening on Chen Yingyuan, go, quickly return to the main building!" Xia Chuan... and ending on At this moment, Xia Chuan wasn't stuck between a rock and a hard....
Chapter 251, "Understanding—Win Hearts First, Then Take the Next Step", is the clearest early answer because it turns Qiu Peng's situation into a concrete plot event. The chapter gives readers a real answer by opening on The distribution of Solidified Fire Oil proceeded in an orderly... and ending on To Chen Yingyuan, these six, along with the thousand Longyou troops,....
Chapter 254, "Alchemy, Special Envoy, Longyou", is the clearest early answer because it turns Hou Quan's situation into a concrete plot event. The chapter turns that into something concrete by moving from Solidified Fire Oil, truly a miraculous substance! to This is personally ordained by our leader, and we ask Xia Hong to....