The final demo update has been released, making a few alterations and quality of life tweaks to enhance gameplay and narrative cohesion.
More specifically:

• Tweaked the introduction after you start a new game and added a new entire scene.
• Tweaked all playable characters' equipment to be unique to them.
• Buffed the General Antidote. 
  • Cures more states than just poison.
• Buffed the Holy Cookies.
  • Grants immunity to all status effects until knocked out.