When will his journey end?

I recently joined Honkai Star Rail in january. Enjoying the story and lore was great but then, one day...I had to fight a knight of beauty. His every movement was magnificent. His voice a sweet sound. A gentleman... accompanied by music that can-

Alright alright I'm getting to the point: I'm talking about his journey of...not being on banners? Do we know when he might eventually rerun?