In Bleach TYBW, Ichigo Kurosaki’s friend and close ally Uryu Ishida seemingly embraced a dark path as he joined the Wandenreich to become a Sternritter in the service of Yhwach, the Quincy Emperor.
Uryuu Ishida is the new Sternritter A - The Antithesis ... bestowing them with an ability with that letter, a Schrift. The Bleach Thousand-Year Blood War anime has shown powerful Schrifft ...