Luffy visiting Ace in fanfiction is one of those scenarios that tugs at my heartstrings every time, especially knowing how their story unfolds in 'One Piece.' Writers often explore this dynamic with a mix of brotherly banter, emotional depth, and alternate universe twists that make each fic feel unique. Some stories stick close to canon, imagining what those unseen moments between them might’ve been like—maybe Luffy sneaking into Marineford early or Ace surviving Impel Down thanks to his little brother’s interference. The best ones capture their playful rivalry, like Ace teasing Luffy for still being weak or Luffy stubbornly declaring he’ll save Ace no matter what. There’s always this underlying warmth, even in angsty AUs, because their bond is just that iconic.
Other fics go full AU, though, and that’s where things get wild. I’ve read everything from Ace time-traveling to meet Luffy as a kid again (cue waterworks) to modern-day AUs where they’re roommates or bandmates. One of my favorites had Ace as a firefighter and Luffy as a chaotic EMT—their personalities fit so perfectly. And then there’s the 'what if' scenarios where Ace lives, and the brothers reunite post-timeskip. Those fics usually dive into how Ace’s survival changes Luffy’s journey, like whether he’d join the Straw Hats or how their dynamic shifts with Luffy now stronger. The creativity is endless, but no matter the setting, the core of their relationship—protective, messy, and full of love—shines through. I’ll never tire of seeing how writers reimagine these two.