"Lucky Pen" is sometimes a custom brush name for apps like Procreate or Clip Studio Paint.

If this was shared in a group chat or Discord, it is likely a specific inside joke or personal clip. 🛠️ How to Handle .MP4 Files If you have the file and need to work with it: Viewing & Playing

💡 A specific social media platform (TikTok, Twitter, etc.) A download link or file folder

Use VirusTotal to upload the file and check for hidden scripts.

It could be a video demonstrating a "Lucky Pen" (often a Japanese or specialized fountain pen) by a creator named Kait.

Use Ezgif if you want to turn a short "Lucky Pen" clip into a shareable loop.