One Piece

Pros

• So not only was it incredibly long (113 books, 1155 chapters) but I had no context for anything that was going on. I spent 2 years reading the series with a Japanese dictionary so that I understood every word. It was great! I had so much...
• I'll add to that (I'm in Portugal): One Piece (the new live-action series)
• It's not like you can read One Piece and somehow avoid learning.
• the people running the LA show with Oda are doing an amazing adaptation
• If you love purposeful & unashamed corniness, then it is an absolute blast.

Cons

• My concern is if you're immersing by watching one piece (which would definitely be hundreds of hours), you're gonna talk like an asshole.
• Everyone wants to jump straight into One Piece or Attack on Titan or whatever, but you're just going to get bogged down with all the specialist words and eccentric ways of speaking-dattebayo.
• Parent context: My one issue is that I felt like Nami and Zoro were too serious. It felt like they were mumbling their lines to get a serious feel to it when in the anime they can be goofy sometimes. I hope they let the cast loosen up a...
• Parent context: Eh, I'd excuse shows like One Piece. These shows need a lot of post production work before it's ready for consumption. Simple dramas that take 2+ to come back for another season, now that's egregious. Reply: If you excuse...
• One Piece gives you 55% coverage with about 1000 more words than you get 75% of with My Hero Academia, showing that by your own metric One Piece is significantly harder and has a far bigger diversity in words used