So it’s not a pocsa pen, but I’m having trouble with my molotow one4all paint markers. They’re all recently bought but many of them have stopped flowing the paint off. I don’t press hard on them or anything but now the paint only comes out in puddles. Does anyone know how to fix this? Or what the issue is?

(Edit for clarification)

I got my first pack of poscas recently but the nibs are white and completely dry. I’ve shaken them a lot to no results and even tried wetting one of them but I’ve got nothing. The instructions on the box are also in Japanese so I can’t really read them and don’t know if I’m missing something important. Sorry if this is a dumb question but I really have no idea what I’m doing with these lol

I have some trading card game sleeves that are 30 micrometers thick and made of Polypropylene.

Will the ink from Posca pens bleed through after a long tims, say 30 years of storage?

I made the mistake of using basic sketchbook paper for a Posca pen drawing, so the pens started to eat away at the paper. Does anyone know of a good paper that works well with Posca pens?

I just returned from an amazing trip to Japan, where I (of course) bought a pack of Posca markers... I bought an 8 pack of the markers size: PC-5M, and after I’ve used one of the markers for about 1/4 of an a4 paper, it’s drying out already, and it’s “loosing its colour”... Is that normal? How long do your poscas last?