Sakura/Synopsis

History
Based on her clothing, Tamanone was the daughter of a nobleman at the court of Heian. She was killed along with her mother by a group of bandits while traveling.

After her death, she became the shinki of Sugawara no Michizane under an unknown name before being released in a fit of rage shortly after, becoming a Loose Spirit.

Volume 11 (43)
Chapter 43: While discussing the matter of what to do about Yato being unwilling to come back to her and Father, the Stray suggests breaking Yukine by letting him in on the God's Greatest Secret like they did with Sakura.

Volume 12 (46 - 47)
Chapter 46: While wandering the Near Shore, she came across Yaboku sitting under a cherry tree and implored him to give her a name as she currently didn't have any, due to being released from her old master's service. Yaboku paid no attention to her, distracted by a butterfly fluttering by.

The next day, Yaboku returns to the cherry tree, where Sakura is sitting dejectedly. He gives her the name "Sakura" and she turns into a koshigatana, a type of Japanese short sword.

Chapter 47: [TBA]

Volume 13 (48)
Chapter 48: After the Stray made her question how her previous life had been, Sakura's curiosity towards it began- much to a disgruntled Yato. He did not know why this was a bad thing to have shinki know, but his instincts screamed at him to not reveal anything. After being coerced and told by Nora that Father thought it was best for Sakura to know, Yato revealed her true name, Tamanone- making Sakura remember her past. Sakura seemed to be part of a sort of noble class in her previous life and is revealed to have been murdered by bandits along with her mother. It is also implied they performed some sort of "torture" on her, to the point that she regrets that her body had been their "plaything". Her resentment towards them turned her into a karma ayakashi, blighting Yato to the point that he could barely stand, and so he had no choice but to let her go and slay her.