With so many different anime and manga available in the world, there are bound to be many that grow in popularity much more than others. For instance, series like Demon Slayer/Kimetsu no Yaiba absolutely blew up in popularity in late 2019. Other series like One Piece and Naruto have stayed relevant ever since they began in the late 1990s, and it seems just about everyone knows what Attack on Titan is even if they never watched/read anime/manga. But what is it that makes these series so popular? The characters, themes, accessibility, plot, or something else completely?
A degree of familiarity within innovation and a high-quality storyline tend to be the two main variables. – J.D. Jankowski2 years ago
I feel like it'd be good to note that all of the ones you've mentioned here are generally classed as shonen (marketed at young/teen boys), and I believe they all (or most) were originally featured in the very popular Shonen Jump magazine in Japan. I'd imagine that having such a big audience as teen boys, and coming from such an established publisher, would help the ones you've mentioned. – AnnieEM8 months ago
It will be very important do differentiate between what makes a manga popular in the Japan, the west, and globally. – LukePatitsas5 months ago
The anime/manga could be recommended by someone and then it could get reviews if the person likes it. – Khrista2 months ago