Backannotation does not (yet) exist. I feel like there was a wishlist item for this over at https://bugs.launchpad.net/kicad but I can’t find it at the moment. Please feel free to add a bug report with your requirements if this would be useful to you.
However, in your specific case, I would move my mouse over RN1 in eeschema and press “Y” to mirror the part about the Y axis.
Thank you.
I understand it.
This schema and layout are example to explain what I want to do.
I found WireIt plugin.
It can edit rats net in Pcbnew, But cannot back annotate.
I’ll post backannotation to wishilist.