I’ve been seeing more of these stories pop up lately, and honestly, it took me a minute to wrap my head around it. The appeal isn’t really about pairing Izuku with a literal alternate version of himself, like a clone. It’s about exploring the interior landscape of one character pushed to its absolute extreme.
Think about the core of Deku’s journey: immense self-sacrifice, a fractured sense of self-worth, and this terrifying potential locked inside a body that keeps breaking. Writing 'Deku x Deku' lets authors dig into that. It’s a hyper-focused character study. You get fics where his past, self-deprecating self interacts with his future, burdened-by-responsibility self. Or fics where his analytical, fanboy side has to negotiate with the raw, One For All-powered instinct. The 'romance' or deep connection is often just a metaphor for self-acceptance or internal reconciliation.
It’s popular because it bypasses all external ship drama and goes straight to the psychological meat of the character. Fans who are tired of the usual pairing wars find a weirdly satisfying purity in it. The tension comes entirely from within one person, which for a series so much about internal struggle, feels oddly fitting.