Are there manga all about Aspergers Syndrome or characters that have that condiyion - in any stage.
It would be interesting.

I haven't come across any manga about Asperger's syndrome.
The closest I can think of is Hikari to Tomo ni... which is about autism.
For other manga about mental illnesses you can try this thread.

Looking for... shoujo with a canned peach confession. Don’t English me I’m panic.

Here's what Wikipedia says about Rui Hanazawa from Hana Yori Dango:

"It's commonly mistranslated that he had autism as a child. However one cannot outgrow autism, and the 'when I was a child' is actually a mistranslation 'since I was a child.' He has Asperger's syndrome which explains why Rui holds grudges for many years, and often extracts his revenge after everyone involved has forgotten about it. He prefers sleeping at least 10 hours a day, has trouble socializing and can't recognize facial expressions (example in being trying to draw Tsukasa, he drew an expressionless egg with curly hair). These are all typical autistic personality traits he still holds."