Depart from the Sites of Grace - Prince of Death's Throne to talk to Fia.   Get the Radiant Baldachin's Blessing.

Refresh the map.   Talk to Fia.

Refresh the map.  Talk to Fia.    Choose yes.

boss - Lichdragon Fortissax.   Get the Remembrance of the Lichdragon after defeating enemies.

Lichdragon Fortissax - Elden Ring Raiders

Come to the location of the Fia.    Get the Mending Rune of the Death-Prince.

Refresh the map.   Come to the location of the Fia.   Get the Fia's suit.   Talk to D, Beholder of Death.

Refresh the map.   Come to the location of the Fia.   Get the Inseparable Sword , Twinned suit.