These materials are free to use to all visual novel developers, artists, and the like as long as you credit Soramatsu / ppppantsu. You are also allowed to share these materials but as much as possible direct them in this blog instead to the direct links.
These aren't much but hopefully more will be added. These images are in PNG and JPEG formats and are edited in Photoshop.
:: DIALOGUE BOXES
:: PHOTOSHOP PATTERNS