Achievements don't seem to working at the moment.

Look in the Cauldron to know which animal you are delivering to.

Put the animal sticker in the top left, and the 3 stickers they like on the right side.

Make sure to save when you are done.

Then deliver your letter.

Repeat for all animals.

If you can't find Kurina, try looking up high.

To see your progress with all the animals, look in the big book.

Thanks for viewing this guide!
I would love to know what you thought about the game or this guide, comment below.
For my other guides, they are here:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2880052179