Although from what it said, it doesn't seem like he will immediately return to the field.

Is he going through rehab?

Maybe.

Speaking of Kamen Soldier...

...from what I remember... it seems that it was one of Team RX's monsters and a female executive called Black General who defeated him....

That's right.

Now, about this Black General woman...

A little bird told me that for some reason ...

...she has a very intimate relationship with a hero...