anyway i managed to remove the lines of ink already with the
help of my friend's dad. what he tried was applying a thick layer
of this special German Wax (forgot the name, and quite hard to find
in SG) and leave it for sometime.
after tat he took a cloth and rub it hard and the ink was
gone!
before that my friend and i tried to just apply on the cloth but it
doens't remove it.
well, all thanks to mr song!