It's less about specific plot points and more about the tension between two different archetypes the original story sets up. Suho represents a kind of polished, almost melancholic beauty—the perfect, sensitive boy with a hidden pain. Seojun is raw, vibrant, and fiercely protective, the guy who seems tough but has this huge heart. Fanfics that dig into 'true beauty' between them aren't about looks at all; they're exploring which version of care or understanding feels more authentic. Does true connection come from Suho's quiet, shared-understanding-of-trauma vibe, or Seojun's in-your-face, 'I'll fight the world for you' passion?
I've read a ton where the conflict hinges on Jugyeong realizing Suho's love feels like a safe museum, beautiful but distant, while Seojun's feels like a messy, lived-in home. The theme becomes about authenticity versus perfection. A really common thread is Seojun helping Jugyeong embrace her bare face not as something to be hidden but as a part of her strength, while Suho's arc often involves him learning to be vulnerable outside his own grief. The best fics make you question the source material's premise a bit.
Honestly, the love triangle setup is a gift for writers because it lets you pit two philosophies of affection against each other.