How to remove sticker residue from comic books?

I'd suggest using some cooking oil. Put a tiny amount on a tissue and rub it over the residue. Let it sit for a bit, then wipe it clean. Another option is to use white vinegar. Soak a cloth in it and dab at the residue. But always test these methods on a small, inconspicuous area first to make sure they don't harm the manga.

You can try using a hairdryer to heat the sticker. The heat might make the glue less sticky and easier to remove.

Another option is to use a piece of duct tape. Press it firmly onto the sticker and then quickly pull it off. This might take a few tries but can sometimes do the trick without harming the comic.

One way to do it is to apply a little rubbing alcohol to the sticker. Let it soak in for a bit, and then carefully peel it off. But be careful not to get the alcohol on the comic itself too much.

You can try using a hair dryer to heat the sticker and then gently peel it off.

One way to remove fingerprints from comic books is to use a mild cleaner specifically designed for delicate surfaces. Spray a small amount on a cloth and then gently rub the affected area. Make sure to test it on a small, inconspicuous part first to ensure it doesn't cause any damage.

First, try wiping the mildew off with a dry cloth. After that, you might consider using a mild fungicide spray, but make sure it's safe for the comic books. Let them air out thoroughly to prevent further mold growth.

You can try using a soft eraser to gently rub the foxing spots. But be careful not to damage the pages.

You can try using an eraser specifically designed for removing pencil marks. It might do the trick without damaging the comic book.

You can use a soft brush or a microfiber cloth to gently wipe away the dirt. Make sure the brush or cloth is clean and dry.