Again if Fire Force didn't have anything happened to it despite it sales and getting anime with top-notch animation, Eden's Zero and Orient will be just fine especially company can't afford to lose these series with their big hits ending soon and need a new generation to lead on, so I see Eden's Zero, Fire Force, and Orient as 'Big 3' for WSM and Kodanasha for sure.
Funny both have same idea on making Sci-Fi series, but I am hearing Kishimoto's have 'issues' on it 'copying' from an series already named Samurai 7 and have sci-fi elements as well. What is up with that?
But I did not talk about risk of cancellation, but of low popularity, I did not want to set an example, but I do not want Edens Zero to pass what to Toriko at the time, with all the promotion they did to him and it was a "failure".
Both Orient and EZ, its authors know very well that it is to have a very successful manga for their magazines, what I do not want is for them to go unnoticed, although it is too early to talk about this, but it does not seem normal for me to have suddenly declined. EZ sales, without neglecting to sell more than 60k being a new series is very good.
It's just my little concern, we are talking here just about Japan, this series has something that very few series have and is an international market since its first volume and this is the big bet that the publisher has with EZ (for me)