Turbo Granny
Now that she's left and taken her powers. What do you think will happen, he comes back and Okarun gets the powers. Okarun is powerless but hella physically strong as they are showing. Or Okarun gets a new set of powers. Most likely will be she will come back because it didn't look like she wanted to leave, but this manga does random BS every other panel so we can't be sure.