If you want to get rid of the star signature on the pen, here are some possible effective methods:

Use an eraser. Gently wipe the signature area until the signature fades or disappears completely.

Use alcohol or detergent. Gently wipe the signature area with a cotton ball or cotton swab, and then dry it with a clean towel.

Use a light sandpaper polishing method. Gently rub the signature area with lightly polished steel ball or sandpaper until the signature disappears.

It should be noted that these methods may damage the appearance or refill of the pen, so please operate with caution and try it in an inconspicuous place before actual use. In addition, if the pen is a collectible or has special significance, please carefully consider whether it is necessary to remove the signature.