Oh sorry I meant the pentel brush pen, I thought it would be easy to know by the name, anyways This One

I'm adding the link to the main post. Sorry again.

You mean one of these? Because I'm on my second one in about... 13 years now, I think, and I only switched to the second because the brush on the first was just barely too splayed out to let me get needle-thin lines, so my wife uses it now to do quick sketches that don't require such thin lines. Unless you got a defective one - always possible - I'd guess you didn't have the ink cartridge seated all the way in.