Serious misunderstandings often fuel their stories—not just petty disagreements, but full-blown philosophical clashes. Himiko's adherence to her 'magic' and her guarded, grief-stricken outlook butting heads with Kokichi's chaotic, truth-bending nihilism creates a fascinating tension. It's never just about one lying to the other; it's about Himiko desperately needing to believe in something tangible and pure, while Kokichi actively dismantles the very concept of belief. Their arguments over what constitutes 'real' magic or a 'real' motive are prime territory for angst or a weirdly tender breakthrough.
Then there's the whole leadership dynamic post-V3, which gets explored a lot in fix-its or survivor AUs. Who takes charge when they're the ones left? Himiko's passivity versus Kokichi's manipulative drive can lead to brutal power struggles, or a slow-burn realization that they need each other's contrasting skills to cope. I've read a few where Kokichi's elaborate plans keep them safe, but Himiko's simple, stubborn warmth is the only thing that eventually gets through his defenses—that specific conflict gets me every time.