A plain wooden door

Stepping through the wooden door, you enter a large, airy room with a wooden floor, lit by skylights.

In the middle of the room stands a small, slim Japanese girl. She has a bob of shoulder length, glossy black hair, a pretty but stern looking face, and is bare foot and wearing a white martial arts uniform. She has a tight, trim little bod but tiny boobs. She is very short, no more than five foot tall, and rather delicate looking - she's even wearing glasses. However, the confident way she's staring at you and the black belt around her waist put you on guard.

She bows, introduces herself as Natsumi, and then strikes a fighting pose.

"Come on then," she says to you in a terse, clipped voice with just a hint of an accent, "Your move."