Saturday is coming out of the showers with wet hair and towel over her shoulder when the alarms start. 'Ni-chan's hilt drops into her hand, and she starts bolting for the armory - or tries to, except there's a baffled looking woman in full kimono standing in the hall

"Shit!" Saturday screeches to a halt. "Sorry, didn't see you - we got an alert, you need to grab a weapon or take shelter!" The rig groans. Saturday spins, looking for a threat.

What Oichi sees is a small woman, densely muscled, with short black hair and wielding a chinese longsword. Her right arm is metal, and heavily engraved.