It was revealed towards the end of season 3 episode 133 (ep 550 overall) of Tower of God webtoon that the series will go on an indefinite hiatus due to author SIU‘s health conditions.

SIU in his blog apologized to the readers regarding the break on serialization and also thanked the fans for all the love they showered on the series. He promises to take care of his health and return with good episodes.

“First of all, I am sorry that my personal reasons as a writer have affected the serialization. ​Meeting good readers for a long time. ​I’ve been living as an unduly happy writer. I think now and in the future.

​I thank you for the love and I think I put in a lot of effort myself, I am always thinking about whether I am a writer who can sufficiently repay that love and interest. I am very ashamed to think that it was a concern that did not reach the readers sufficiently through the work I was working on. Every week, I was troubled by the thought that if I had been a better person or writer, the readers would have been happier. I am repeating the life of constantly picking up a heavy pen again. That is why it seems that he cannot let go of his love for his work and work under any circumstances.​

​I will take care of my body and mind and come back with good works and images.

I love you and thank you.​

I hope you have a happy and healthy Monday every week.“

Season 3 episode 133 is available to read for the users with free pass and for others it’ll be available on July 18, 2022.

The series had previously gone on a hiatus in June 2020 due to similar reasons and returned in May 2021.

Tower of God is a South Korean manhwa released as a webtoon written and illustrated by S.I.U. It has been serialized in Naver Corporation’s webtoon platform Naver Webtoon since June 2010, with the individual chapters collected and published by Young Com into nine volumes as of March 2022.

Tower of God received official English translations by Line Webtoon beginning in July 2014.

It has received a mobile game and merchandise. In Japan, the web manhwa received an anime television series adaptation by Telecom Animation Film that first premiered on Naver Series On in South Korea, and aired in Japan immediately afterward.

It originally aired from April to June 2020. Crunchyroll licensed and simulcasted the Japanese broadcast version of the anime for its streaming service.

Source: Webtoon, SIU blog