How to make Layered Pudding

In this video I am going to make Layered pudding
Ingredients:
Layer 1, 3, 5, 7
7g agar-agar powder
100g sugar
1 tsp cocoa powder ( typo error in video )
800ml water
Layer 2, 6
2 eggs yolk
60g melted butter
150g sugar
14g agar-agar powder
1 L of milk
Layer 4
7g agar-agar powder
60g sugar
500ml milk
100gr dark chocolate