thank you in advance for helping me to complete the story quest but I have one more problem which is how to complete this quest event
Viewing post in Yorna: Monster Girl's Secret comments
It's beyond me why people ask the dev instead of exploring the game's world even if the game directly tells them what they need to do...
There's only one camp on the first island marked with a tent and you can see it above the text block. Inside the camp, there's only one pot over the fire. Bring 10 red herbs to it and Ada will make the required medicine.