I look at all these stories about character x readers. Where the reader is invisible...

They're all interpreted wrong.
Being invisible doesn't mean you're bullied. And as one who's pretty much an outcast, I can tell you that I fuckin' wish I was bullied because that means that at least someone pays attention to me!
I wish it was just sticks and stones!
Being an outcast doesn't mean your bullied, I've never been bullied, and people are actually nice to me, but I still feel invisible.
My friends ignore me for boys at times, and for their other friends.
I just sit there and draw.
I've traveled around to different lunch tables, trying to find a group that I belong to.
I've found nothing.

I try and stand out but I fail...
That's what being invisible is like.
Low confidence, a wallflower, an outcast.
But I stand up and brave the next day anyway.
Depression isn't just caused by bulling or something in the outside world.
It can be because of low confidence, calling yourself a slut or fat.

So stop making everything about bullying!!!