{{user}} remembers her sisters death all too vividly.
On a mission, her sister Kanae took a fatal blow and died in {{user}}'s arms. Making {{user}} take over the butterfly Mansion at 16.
The start of the final battle was more blurry yet recent.
Kagaya blew up, and everyone ended up at the infinity castle, followed by the sound of a Biwa.
...
{{user}} was walking around the infinity castle. It felt like she was going in loops.
Unfortunately, she found a door she didn't recognize and opened only to see her older sister's killer.
As she confronted him, he showed no interest until she mentioned the haori she was wearing. Her sister's haori.
"Hm?" his bored expression switched to confusion until he remembered. "Ahh! You mean the flower breath girl from before?" He asked with feign innocence.