I’m not exaggerating when I say I’ve probably never seen less effort put into developing a romantic chemistry (Sora and Kairi) from Sora’s side that supposedly has this cosmic bond aspect, especially in this novel. You’ve got Roxas saying “You’re that girl he likes” to Kairi (which is telling, not showing) and that’s virtually the extent of it for almost the entirety of both volumes. They don’t include Halloween Town so there’s no scene of Sora fantasizing about dancing with Kairi (though they could’ve easily moved it to the scene of Belle and Beast dancing if they wanted to included it). In Port Royal there’s no scene of Sora looking at Will and Elizabeth together and Donald and Goofy teasing about Sora thinking of Kairi. You’ve got Sora getting on his knees and begging Saix for Kairi and saying Kairi’s more important than anything- which is well and good, but then when they reunite it is again- cute and happy but as dry of chemistry from Sora’s side as it is in the games: “You’re not a dream...” Her arms wrapped tight around him. Sora stalled in confusion for the briefest moment before his own arms returned the hug.” Wow guys you are really pulling out all the stops for this “romance” aren’t you? I can really feel the chemistry in Sora’s “stalling in confusion”.
Meanwhile on the next page you’ve got Sora breaking down on his knees and squishing his face into Riku’s hand- and more importantly YOU GET TO KNOW WHAT SORA IS THINKING, about how much he missed Riku, how much he wanted to talk to him. Like jesus man, a novel format is THE format for exploring your main character’s thoughts about what is happening. Why is it that we always get an inside look at Sora’s thoughts when it’s about Riku, but when he’s with Kairi it’s radio silence? Wait what’s this? Sora’s showing off to try to impress Kairi? Well that’s somethi- oh wait he’s also doing it to try to impress Riku? Hold on. Here comes the scene where he discovers the drawing of Kairi giving him a Paopu fruit, surely he’ll have some thoughts about that! Wait...he’s got nothing to say about it? No thoughts whatsoever that ought to be shared with the reader? Not even a description of his facial expression when he sees it?! “After a moment, he turned away and strode toward the mouth of the cave- then broke into a run. Outside, Sora blinked in the dazzling sunlight, then ran to Riku, who was perched on the sideways trunk of a paopu tree.” Annnd we’re back to Sora’s thoughts, about how badly he had wanted to come home. So you’re telling me that Sora sees this drawing, has no thoughts on it worth sharing, no facial expression worth describing, and then immediately runs out to Riku? THIS is supposed to be one of the most romantic moments of the series? They didn’t even try (at least in the game you can see Sora’s facial expression).
You know, I actually can feel the chemistry from Kairi’s side, though limited because there’s very few scenes where we get to follow her story and thoughts. But Sora is your main character. And if you want your audience to care about (and believe in) his feelings for Kairi you HAVE to put a little more effort in than that. You can’t just expect your audience to root for it just because “Hey, he’s a boy and she’s a girl and everyone knows they are gonna get together in the end”. I’m not talking about making him go over the top and in your face about it. You can say so much with so few words if you know what you’re doing.