It's a flat brush-like pen that touches the soft cotton pen I posted before...
In many ways, it seems great for doodling half-frames while being blown away.
Unlike the Mongle Cotton Pen, there is no brush size or pressure adjustment; I recommend adjusting the ink → color to suit your preference and stretching it

This is the pen pressure I use, but I thought it would be helpful for reference, so I'm leaving it here!
이전에 올려둔 몽글솜펜을 만진 납작브러시 같은 펜입니다...
여러모로 뭉개면서 반무테 낙서하기 좋은 것 같아요
몽글솜펜과는 다르게 브러시 크기 필압은 없으며 취향 맞춰서 잉크→색 늘이기만 조정해서 쓰는 걸 추천합니다

제가 쓰는 필압입니다만, 참고가 될 것 같아 남깁니다!