Statistics reveal only a small minority of One Piece readers are actually the children Shonen Jump is normally considered as targeted at – instead, almost 90% are adults, with the manga boasting more elderly than juvenile readers.

The readership statistics:

1-18: 12% 19-29: 43% 30-49: 32% 50+: 13%

The popularity of Japan’s most top-selling manga would appear to be almost entirely due to its broad adult readership.