That there is a JoJo Reference. Par for the course for Warugaki, of course.

At least Kogasa didn't use Heavy Weather.

Side job? I hope warugaki expands on that a little someday.

Knite0 said:

Side job? I hope warugaki expands on that a little someday.

I think the job she was referring to is "being an umbrella".

Knite0 said:

Side job? I hope warugaki expands on that a little someday.

She's also a babysitter in the human village

It seems kogasa is in fact the water youkai as in the youkai that manipulates water