Japanese manga is said to have high-quality storyline and structures unlike the overseas counterpart.
Furthermore, compared to manga from other countries, wherein most conclude by only one episode, it is common among Japanese manga to have a story and is illustrated over more than one episodes.
The expansion of manga's popularity in Japan has a long history that traces back to the end of World War II (1945).
Many adult manga have been published in the country since then. The only country in the world where adult manga magazines in circulation are read is Japan.
Japan has this culture where both children and adults enjoy reading manga.
Anime also has this well-structured storyline and concept that are enjoyed by not only kids but adult too.
"Cosplay", a product of modern culture originated from Japan that people dress up as their favorite anime or manga character, is also widely enjoyed around the world.
Introduction to Japanese manga and anime that are widely popular overseas
Fullmetal Alchemist (Hagane no Renkinjutsushi)
Princess Mononoke (Mononoke Hime)
Spirited Away (Sen to Chihiro no Kamikakushi)