
Where can I read chapter 56 or are the numbers off?

You can read there. https://utoon.net/manga/a-tidal-wave-of-glory/

I want to know what happens to Fog! Does he ever come back or escape the “cosmic charcoal” like a another commenter called it?

Spoiler answer
Mist got kinda "sucked" or "absorbed" by the black thing. But mist is fast enough to avoid dyinh, they only got one hand taken (when I say taken, it means the hand became black mist and cannot be touched). But mist is fine and come back to yeonjae. Yeonjae was so scared of losing mist and apologized, saying that mkst should refuse the next time he asked for something dangerous (yeonjae didn't know that was so dangerous).
As far as what I read, mist is still.okay although there was an episode where mist disappear again and yeonjae went crazy.

The concept of being able to see the status of others is nothing new, but I like that the plot device is being used in a child-rearing story! It’s an easy read, no difficult language (so far), and the budding romance between the FL and her husband has been very cute. I’m looking forward to seeing how the FL overcomes various challenges with children’s fluctuating thoughts and emotions in high-stress situations while unknowingly bringing back her husband’s emotions as well. (๑•ㅂ•)و✧
I really enjoy this story. It has plot, fluff, and smut (like other commenters have said), but there’s just one thing that bothers me as of chapter 13.
Lucion’s older brother is a serious piece of shit. (╬ ̄皿 ̄)凸 Instead of trying to help him years ago, he harmed Lucion, disgraced him in public, threatened him with death, and is even resorting to insult after insult after seven years of ignoring his existence. And for what?? To threaten Lucion’s relationship with our cute rabbit?
Maybe the author is trying to make out that the brother’s intentions are good and will show it at some point, but I can’t see his behavior being justified at any point. It’s sickening how he’s treating Lucion. I want to reach through dimensions, grab his collar, and punch him hard enough to knock his canines out. ヽ(`Д´)ノ