The Girl Sent from Heaven

Aria doesn't know how she died. She's tried everything but she just can't remember. She knows her Grandma knows something, but no matter how many times she asks, Shuri won't tell. Aria sets out on a quest to find out what really happened, but just a few days after she leaves, she encounters a strange old man selling keys to nowhere. After she gets tricked into buying one, Aria figures she might as well try it on a few doors. Little does she know this key can unlock a lot more than she thinks.