Well, the Pokemon can be like matchmakers. Ash's energetic and friendly Pokemon might encourage Diantha to open up more. And Diantha's elegant Pokemon could make Ash more aware of different training approaches. In battles, their Pokemon can also create a sense of competition that is healthy for their relationship. They can learn from each other's Pokemon strategies and use that knowledge to improve their own bond. Also, when their Pokemon need help or are injured, they can rely on each other, which deepens their relationship.
Their Pokemon can act as a bond between them. For example, if Ash has a Pokemon that gets along really well with Diantha's, it can bring them closer. Pokemon battles can also be a way for them to show respect for each other's skills. If Ash's Pikachu battles Diantha's Gardevoir and it's a close match, they'll admire each other more.
The Pokemon are a crucial part of their relationship. First of all, they can start conversations. For instance, Ash might ask Diantha about her experience in training a certain type of Pokemon. Their Pokemon also accompany them on their adventures, which means they are constantly in each other's company. When they train their Pokemon together, it's a great opportunity for them to interact on a deeper level. And in some fanfictions, their Pokemon might even communicate with each other in their own ways and influence the relationship between Ash and Diantha, like a Pokemon giving advice to its trainer about the other person.
Chapter 191, "Repelling the Enemy and Punishment, The 1st Wedding", is the clearest early answer because it turns Longyou Alliance's situation into a concrete plot event. The chapter gives readers a real answer by opening on He remained silent, and Chen Yingba below could only continue to bow,... and ending on The exact strength of the Hive Camp, he was unsure..
Chapter 249, "Secret Passage, Han Feng, One Step", is the clearest early answer because the hidden truth stops feeling like mere subtext. A useful checkpoint is the way the scene starts with The flames emitted by the Cold Ruins Tripod illuminated the three... and follows through with Bringing fifteen hundred Earth-digging Realm individuals, plus five....
Chapter 235, "The Might of the Longyou Army, Yang Lu's Desperate Plight", is the clearest early answer because it turns Long Mountain's situation into a concrete plot event. It opens with On the night of April 14, Xia Hong indeed personally witnessed the... and closes on First take some interest for He Tu, die!" Li Xuantiang's voice was....
Chapter 238, "Decisive Victory, Admonition, Hou Tong's Plan (Part 3)", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Hearing these words, everyone's expressions showed slight emotion. and follows through with Thus, if these two want to reach Zhaoyang, they must cross this plain....
Chapter 243, "Hanqiong's Great Battle, Realization After the Fact", is the clearest early answer because the buildup finally cashes out in a real clash. The chapter turns that into something concrete by moving from Longyou Year 48, April 17 On the rooftop of the main building at... to Are they trying to monitor and restrict me to the Hanqiong Station,....
Chapter 226, "Beehive Incident, Lin Ye Is Dead (Part 3)", is the clearest early answer because the violence around Main Zone Space becomes final instead of hypothetical. The chapter turns that into something concrete by moving from The big iron gate before the Main Zone was the last barrier of the... to A massive explosion reverberated throughout the underground space of....
Chapter 196, "Sword Puppet, the First Intermediate Squad", is the clearest early answer because it turns Xia Chuan's situation into a concrete plot event. It opens with Qiu Peng knew this very well, so the target of his broad knife could... and closes on From within the piled snow, a crimson giant lying flat suddenly sat....
Chapter 198, "Clearing Meridians, Breakthrough Imminent (Part 2)", is the clearest early answer because Cold Resistance Level finally turns buildup into a real advancement. The chapter gives readers a real answer by opening on Regarding cultivation, it doesn't allow him any carelessness. and ending on The beast blood reserve is not ample, it's a bit tight." Xia Chuan,....
Chapter 209, "Dragon Sparrow Coldblood, Luo Ming's Sense of Loss", 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 A kilometer to the west of the valley, a black city wall running... and ending on I had already arranged with him at Jing Valley as per the leader's.... In story terms, the chapter closes with "You can also try softening the land with coal stone and transplant some medicinal plants to test;
Chapter 181, "What Does Great Xia Want, Liu Dahu's Ambition", is the clearest early answer because it turns Chen Hua's situation into a concrete plot event. The chapter gives readers a real answer by opening on He turned his head to look at Zhu Xing and Meng Yuan, discovering... and ending on Initially, Qiu Peng didn't fully understand, but now he realized that.... In story terms, the chapter closes with "Leader Xiao, it's on the way, so come along with us.