Silent Death

Haruki Inoue is head-lieutentnant Chojiro Sasakibe granddaughter. Her mother and father was killed by an army of hollows and she is after them for revenge and the safety of the soul society and the Seireitei. Unknowingly Head-lieutentnant Chojrio has fallen into an unknown illness the has hindered his spiritual energy, but not permanently. So it's up to her to fill in his shoes, knowing that she is equally powerful as him.

Also this might be a love triangle between Renji and Byakuya.