Unlocking: Royal Insignia Collector: Mask of Darkness (Life Sword Quest)

In order to unlock Mask of Darkness[1] Blueprint from the Creste's Royal Medal shop, you will need to complete the Life Sword Quest. There is no NPC to initiate this quest. You just need to collect the following items from the special Wanderer monsters in Glast Heim Hall.

Level Requirement: Level 80

Quest Items you need to collect:

1. 20x Bravery in Legend from Wanderer Murasamemaru

2. 20x Unknown Imprint from Wanderer Onimaru Kunitsuna

3. 15x Mystery Tear from Wanderer Totsuka-no-Tsurugi

4. 25x Mystery Gas from Wanderer Kusanagi

5. 20x Broken Scale from Wanderer Muramasa

Once you completed all the Quest Items, you can go to Collector Pixi NPC found at the entrance of the Glast Heim Hall.

*Quest Items can be found inside your Quest Bag.

Collector Pixi will exchange your quest items to Collectible Items. This will be visible in your Bag.

(click to enlarge)

Snake Scale from 20x Broken Scale

Kunitsuna Imprint from 20x Unknown Imprint

Evil Aura from 25x Mystery Gas

Eight Heroes' Valor from 20x Bravery in Legend

Susanoo's Missing from 15x Mystery Tear

Put everything inside the Handbook.

Once all 5 is inside the Handbook, talk to Collector Pixi again and he will give you the Life Sword item. This will also unlock  the Mask of Darkness[1] Blueprint

You can purchase the blueprint from the Creste's Royal Medal Shop for 2500 medals.

You can get the medals by killing monsters anywhere in Glast Heim maps.