In a recent interview, Hajime Isayama was asked how much is left in his Attack on Titan manga, which debuted back in September 2009 and has become a massive hit, spawning anime, and live-action adaptations. According to Isayama, thereās about five percent left in the manga before it will end its run. The upcoming anime is touted as the final season, so I imagine theyāll end at the same time.

When asked whatās next (via News Gamme), Isayama said, āIād like to do something like a dark comedy. But more than that, I want to open a sauna.ā
About three years ago, he really started enjoying saunas.

Heās even drawn the Attack on Titan characters sweating it out in a sauna.
The new comment of Hajime Isayama on Bessatsu ShƓnen magazine in March 2020 issue:
"After a tough time finishing the manuscript, sauna is all I can think about. Sauna, sauna, saunaā¦"
He wants to open his own onsen so hard after his manga ends š pic.twitter.com/45vvuShcCt
ā Attack On Fans (@AttackOnFans) February 6, 2020
The show created this artistās rendition to illustrate his dream. The sign reads āAttack on Saunaā in Japanese.

The illustration is just a TV gag, so donāt assume that Isayama, if he does open a sauna, will open an Attack on Titan style one!