So someone asked me what brush pens were, I think? these are brush pens, which I use to draw my recent daily sketches. They’re both Pilot (the brand) brush-pens. I’m not sure where you can get them though, since these were given to me by my uncle :(.
The grey one is actually a silver brush pen that’s stopped working, so what I do is actually dip it in water and use the smudges that come out of the black inked lines (because it’s not waterproof ink) to shade the drawing. that’s why my shadings are a little more intense around lined edges :).