Alright, let's get into this. The most electric Gojo fanfiction I've seen always starts with consequence. He's the most powerful, right? So the plot needs to break that. I'm talking about a story where, after the events of Shibuya, his Six Eyes are permanently damaged—not gone, but glitching. He sees fractured possibilities, glimpses of futures that never happen, and it makes him fundamentally unreliable for the first time. The plot then becomes about him having to rely on others, maybe a character he previously overlooked, just to function. It turns the 'untouchable' trope on its head. The relationship grows from necessity into something real, because he's literally unable to navigate the world alone anymore.
Another one I love is the 'found family' angle, but with a twist. Instead of Gojo adopting a kid, what if he's magically or cursed-technique-bound to protect someone from his own past—a non-sorcerer relative he never knew existed. The conflict isn't just external threats; it's Gojo confronting his own family's legacy and the cold isolation of the Gojo clan. The reader character becomes his tether to a normal human world he never got to have, forcing him to explain simple emotions he's always brushed aside. The plot works because it forces the invincible to be vulnerable in a way that isn't about physical power, but about emotional history he can't punch his way out of.