The Perpetual Mechanical Array drops both Prithiva Topaz and Shivada Jade, so you may not have to fight another boss to get enough Shivada Jade for Ayaka.

Finally is the Perpetual Heart, which drops from the Perpetual Mechanical Array boss. This robot monster lives underground off the north coast of Narukami Island.

Screenshot by Siliconera Perpetual Mechanical Array Drops in Genshin Impact Perpetual Mechanical Array is a boss enemy that is found on Narukami Island in Inazuma.

The Perpetual Heart item in the inventory menu (Image taken by VideoGamer) Every character in Genshin Impact requires Ascension Materials to break through level caps that limit progression.