According to Bellion, the Grand-Marshal Grade shadow servant of Jin-Woo, and formerly of Ashborn, the shadows will only disappear if Jin-Woo dies. Their survivability depends on Jin-Woo ...

She summons a shadow servant if she hits an enemy at the new location. Mi Yue sends out a tether forward, linking to the first enemy hit for up to 4s. Every 0.5s, she slows the linked target by 2.5%, ...