It seems like director Tetsuro Araki is not keen on following the footsteps of HBO in bringing back "Game of Thrones" on TV without the sixth "A Song of Ice and Fire" novel, since he opted to halt the production of "Attack on Titan" season 2 because of the unfinished manga.

MoviePilot reported that the production for the second season of "Attack on Titan" has been suspended because the manga created by Hajime Isayama has yet to complete a four-story arc.

Both Isayama and Araki stated that the anime must always follow the content of the manga. It means that the animated series must wait until the manga has completed its four story-arc before it can be released.

At the moment, the manga is done with its second story arc. This leaves Araki no choice but to wait until Isayama completes the original content in the manga.

But while the official release date of "Attack on Titan" season 2 remains unknown, both Isayama and Araki discussed he content of the series in an interview with Bessatsu Shonen magazine, as translated by Fukushuu.

The manga creator and anime director talked about what fans should look forward to when the series returns for its sophomore season.

According to the manga creator, the changes in Sasha's speaking patterns after returning to her hometown in season 2 has a reason.

"That scene indeed conveys the reason Sasha hides her native speech on purpose -- because she has always considered it to be somewhat shameful. It also expresses the image of a 'New Sasha,' who occasionally may slip into speaking dialect...so even if a couple of lines in dialect are planned, I don't think it's such a bad idea," Isayama revealed.

Meanwhile, Araki stated that he is up to the challenge of the changes in "Attack on Titan" season 2.

"Whether it's season 1 or season 2, I'll be mentally prepared to face the production challenges. To animate Shingeki no Kyojin is a cultural undertaking, and because I understand that this is work that will have historical value, I absolutely cannot make mistakes."