Tsuki Ryoko

Background
Tsuki Ryoko is a lone wanderer that roves all over the Sereitei looking for his mother and father, who died in the human world when she still was young. She still does not know if who killed her parents was a Hollow or a Soul Reaper, and so is decided to discover it to kill him. In her journeys she forms an alliance with other Quincy orphans sworn to find their parents' souls.