Dude, that depends on what pen is written. If it's just an ordinary oil-based pen, just wipe it with a wet rag, and the water-based pen will basically fall off as soon as it is wiped.

According to you, it can't be erased. It should be written with one of those black and thick signature pens. It's too long to erase. According to the principle of similarity and compatibility, alcohol should be erased. If you can't erase it, it is obviously "deeply poisoned" ~ ~ I advise you to give up! Note: don't wipe it with organic things, or you may lose your basketball ~ ~

It's easiest to draw a beautiful pattern and cover it up.