The Cursed Traveller - Aether - Cursed TECHNIQUE Template System

Synopsis; This is my version of the continuation of the story "Traveller Exodus into despair" after chapter 17, where i plan to make aether more overpowered by taking teyvat by storm before going into fontaine. When getting onto the statue for aether to heal his wounds and scars from beating the Crap from the archons (Just like in game) aether felt a strange energy resurging again, just like after the fight with the archons, and acquires a mysterious system born from the surge of negative emotions accumulated from his travellers, called it the "Cursed Jujutsu Technique System". What powers and abilities will he discover that's being boosted by his endless pool of this foreign energy or otherwise known as "Cursed Energy"?