Honestly, the core challenge lies in making Sesshoumaru's emotional thaw feel earned while honoring Kagome's independent spirit. The 'clean slate' approach irritates me—people forget she's tied to Inuyasha's past, and that history matters. A convincing development often has them meeting years after the jewel's destruction, when Kagome's returned to the modern era and matured separately. Their bond forms through shared respect for duty, maybe over protecting Rin's village together, with Kagome calling out his detached nobility in ways that actually unsettle him. It's less about grand declarations and more about subtle, charged moments where his silent protection becomes something she notices, then questions, then quietly expects. Good fics let Kagome's human warmth seep into his world without melting his entire character.
I've dropped stories where he turns human for her or abandons everything overnight; it rings false. The better tension comes from Kagome adapting to youkai social codes, learning to read his minimal cues, and him finding value in her stubborn, healing-focused perspective. Physical intimacy, if it happens, needs to feel like a logical extension of that established trust, not the goal. The most satisfying progressions I've read had them bridging worlds through action—like him tolerating her modern medicine, or her learning to navigate youkai politics without losing her moral center.