We can only be certain if there is direct confirmation though. Right now the best we know is speculation regarding the amazon credits and not even Afternoon said anything about this. I'm sure that Ichikawa is fine so its not much of a worry even if we don't get a chapter this month. We will all know for sure in the upcoming Afternoon release in a few days, it could also be that leaks drop a day before it, there have been times of a late drop. We will probably be sure if chapter 72 is in or not probably during Mondays.>>178433691
No its not confirmed, no official source said anything. They even did a Ichikawa related promo tease 5 days ago, the one with the Moonbusts.
Anyway, just keep being patient. I'm sure that we won't be hearing any news tommorow though.