It is a watercolor-like brush.

It is simple to set up, but there is a request to share with those who need it during broadcast,

Raise.

It's like a Photoshop brush, so it doesn't mix when it's overlapped.

If you look closely, the end of the brush will be painted about 1 pixel darker with the watercolor boundary.

If you don't like this, don't check the sink boundary.