Omeme Time Saving Brush|Hitomi Kakikomi [Free for a limited time]
CSP
Downloadassets.clip-studio.com

If you make it too thick, it will become a bore bore.
This pack is free — download it straight from the author's page. All rights belong to the author; BrushCatalog links to the original source.
How to install: download the file, then in Clip Studio Paint, drag the .sut file onto the Sub Tool palette (or Sub Tool palette menu → Import Sub Tool). More details →