Old Picture Book: you can access it through the items catalog. Go to Item Catalog and select Old Picture Book.
Secret Chapter Guide
You can Secret Chapter Guide in Old Picture Book. Secret Chapter Guide is about finding the three important keys and after that unlocking Flower Puzzle. Each Key is located at a different Location.
There is a total of three keys that you have to find in this world. Blue Green and Pink Keys. Each key will represent its world by colour. Which will lead you toward the final location.
Blue Key (First Key)
Blue Key can be found in Chapter 1 Verse 4 (Second checkpoint from Chapter Selection). After selecting Book in Item Catalog you will appear in a different world where you have to find the Blue Key. This world represents its key colour as this key is blue so the world is blue.
This key is easy to find as you travel some distance at the start of the checkpoint you will see a blue Key between the cliffs. Take the key and proceed to the next key.
Green Key (Second Key)
You can find this key in Chapter 4 verse 1 (First checkpoint from Chapter Selection). This key can be found on the cliff. You have to use the tool to climb the Cliff. You can use Alruna’s Weapon to climb up here.
You can obtain this from Chapter 1 for that you have to collect all Umbran Tears in Chapter 3. Following the path, you will see a Pillar from that Pillar you have to climb up. You will see a Green Key take that key and proceed to the next key.
Pink Key (Third Key)
You can find this Key in Chapter 13 Verse 1 (Second checkpoint from Chapter Selection). After selecting you will teleport to the Ginnungagap, The Chaotic Rift.
Ginnungagap, The Chaotic Rift
This is a place full of destruction and lights. You can clear your path by traveling this world by jumping and flying. When you put a foot on a cliff it will self-destruct. So you have to be careful. This will take a bit longer to travel in this world because its structure breaks itself and there are many hurdles through which you have to go.
The pink key is very difficult to take because it’s in mid-air so you have to be careful. After clearing the path you will see a pink key. Take that key.
Secret Chapter Walkthrough
After that, you will automatically go to the book. After accessing the book you will again teleport to the unknown world.
You will see yourself in a circle surrounded by red lights and follow the path forward after some time you will see a lake with a big Door to the entrance.
Enter through the door and you will teleport to the next location which will take you to the flower puzzle.
There are a total of three flowers situated at different locations where you have to solve the puzzle. We need to solve the puzzle to get the secret costume.
After solving the flower puzzle and clearing all the way to the final cliff you will be surrounded by three devils.