/jp/ - Otaku Culture

Has anyone else had small black marks appear on the outside of their onaholes? Particularly ones made by Magic Eyes.

I've got about 7 onaholes. Recently I noticed some smallish black marks on the outside of the two onaholes I own that were made by Magic Eyes (AKD4* and rina). I took a picture of one so you can get an idea of what it looks like, I checked all my other holes and none of them seem to have the same marks.
I hope it's not mold, but I can't think of anything else it could be.
Oh, btw, I didn't take a picture but the spot/mark on rina is a bit darker and more noticeable than the ones on AKD4*, but they're still only small.

I wash and dry my onaholes thoroughly immediately after use and I store them in my desk drawer, with each hole wrapped in its own microibre cloth.

shit, I'm rambling on a bit, sorry. Anyway I guess I just wanted to ask you people for your thoughts on what this might be, and if you've noticed anything similar with your holes.

The marks are only small and they don't seem to be growing (from what I can tell. I noticed them about a week or so ago) so I'm not too bothered and I'll keep using them anyway.