Hajime Isayama 's Attack on Titan manga sold 8,342,268 copies to rank #1 among comic series in Oricon's sales chart for the first half of 2014. In doing so, it ended One Piece 's five-year reign (2009-2013) as the top-selling comic series in the same period. One Piece sold 4,936,855 copies at #2.

Isayama commented that he only imagined being #1 on Oricon as a once-in-a-lifetime dream. He thanked all his readers for making Attack on Titan #1.

Oricon's book ranking charts cover sales from November 18, 2013 to May 18, 2014 in Japan.

Attack on Titan ranked #4 in the first halves of 2011 and 2013, but this year is Attack on Titan 's first at #1. In the first half of 2014, Attack on Titan nearly doubled its sales from the same period last year (4,292,208 copies).

The rest of the Top 5 comic series were Kuroko's Basketball at #3 with 4,616,040, Naruto at #4 with 3,247,920, and Magi at #5 with 3,085,177.

One Piece volume 73 was the top-selling single volume with 2,825,339 copies. (The volume debuted in March.) It was the only volume to top two million copies in the first half of 2014. In doing so, it maintained One Piece 's six-year streak at #1 among single volumes.

Attack on Titan volume 12 sold 1,770,746 copies in the first half of 2014 to rank #2 among all single comic volumes. (The volume debuted last December.) Volume 13 debuted in April and sold 1,665,561 copies to rank #3. All 13 volumes in the main Attack on Titan series ranked in Oricon's top 100 comic volumes for the period. In all, 17 Attack on Titan books (including limited editions and tie-in books) ranked in the top 100.

Source: Oricon