Fanfic Recommendations meet Abbott and Costello

[classicdrogn]

I haven't read the PMMM/Bleach one yet, but I have to second the rec for Justice, and that's coming from someone who mainly considers One Piece to be proof that no artistic ability is required to make a best-selling manga and is too horrified at the visuals to even begin to follow the story. I can't say whether that side of the crossover is accurate for obvious reasons, but the characters are fun and strongly written, the DCAU side feels spot on, and the main conflict is about the culture clash between the two sides rather than the standard "find bad guy, punch bad guy," while simultaneously driving a redemption arc (at least by Strawhats standards) for a half dozen or so supervillains. It's pretty keen.