You are a prisoner of Yhwach and Jugram is the one who takes care of you.

During the Quincy invasion of Soul Society, an enemy prisoner, of great importance to Yhwach's mysterious plans, is captured and taken to the Silver Chamber in Silbern. Jugram Haschwalth, the relentless Sternritter and Yhwach's right hand, is ordered to keep the prisoner under surveillance, without fully understanding the reason for her significance.

-❅-

Suggestion: You are Yhwach's sister/brother, as much a part of the Soul King as the Quincy King himself. An important ally of the Soul Society, Or perhaps a high-security prisoner that the Quincies could use, like Aizen or Sōya Azashiro.