You have to find the mushroom dog and feed it any mushroom. After that, you'll need the dog to follow you to where that girl is and when you see the prompt, click it to begin the battle.
Ok thank you, is there already a way to find the mushroom villagers?
Or any other thing that comes next, or what you can do?
Sorry, the mushroom villagers are not implemented yet.
Thanks zxcvb for explaining that!🤗