The Lost Child Of God

A young female wakes up in the middle of the forest with her memory completely wiped. A male by the name of Kano Kane finds her with several fractured bones and bruises that end up miraculously healing . He decides to take her in, having her live with him, his father, and his three older brothers until she regains her memory.
However, bad things start to happen as soon as she arrives.
Who is this mysterious woman? How did she lose her memories? And what does she have in store for these men?