What does 'JK' signify..

[_2old_]

Apologies if this is the wrong place for this question.

I've been puzzling over this for a while now, so to put my mind at rest could somebody explain what the letters 'JK' mean when in a video title?

For example '' Skirt Collection 4 JK daring little devil ''

Thanks in advance for anybody who can help.

 

[_2old_]

Never mind, found the answer

 

[M1N0RA]

Could you post it anyway? I'm kinda curious about the term as well.

 

[hanklee]

JK(Joshi-Kousei)
=Schoolgirl