I begin to hate that unknown girl who was his model.

Instead she was referred to as "the unknown girl".

And then a sudden determination came to him to trust his fate to this unknown girl, whose face, even, he had never seen.

'What on earth did you do after you'd found this unknown girl in your house?'

Holly says a silent prayer for the families of the unknown girls.

But it is sure that he had his special reasons for making the abrupt decision to marry the unknown girl.

He must know why his wife would kill an unknown girl in his house, how it happened, the circumstances.

Thanks to the unknown girl, the scheme had been frustrated.

The story starts when he is attacked by an unknown girl who happens to also be a Kämpfer.

Monty soon falls in love with an unknown girl, whose name is later revealed to be Tina.