While Yoruichi has been an important part of the Shinigami's defense against Yhwach's invasion, she has mostly served in an auxiliary role, helping in the ultimately failed defense of the Soul King Adnyeus and in the setup that enabled the Shinigami and their allies to return to the Soul King's Palace after Yhwach transformed it into Welt. In the finale of BLEACH: Thousand-Year Blood War Part 3 – The Conflict, Yoruichi finally joins the fight as she fends off Sternritter D – The Deathdealing, Askin Nakk Le Vaar, who managed to defeat not only Ichigo, but incapacitated both Chad and Orihime too.