AP Bag Pleather Stain

Hello everyone.
I have a little problem I dont know how to resolve.
My closet is crammed so my bags dont have much breathing space.
I havent touched that area in almost a year and did today to tidy up my wardrobe,
however, two of my Shy Bear AP bags got stuck together, so i slowly peeled them off of each other.
The other one is okay with no damages, however my brown one received a stain or discoloration on his cheek.
Any of you girls have experience with stain removal on AP bags, particularly a stain caused by another AP bag?

EDIT: i honestly dont know if its a stain or not.... i hope it is, would be the easier of the two to fix
it could also be that the ivory color was removed from his cheek revealing the grey underneath.... :(


Picture of the damage.
Any help with be really appreciated! :)