Time to go on the offensive, no holding back.
You put your fists back up, working out the reach of her sword and how close her circle of lethality is.
Her calm has returned now, this is going to be harder. She's got speed on her side, but you're stronger.

Got to use your head.

Youmu darts forward, sword cutting an arc through the air, up and from the left. You drop to the ground, the blade passing within inches of your head. This time you don't stay down long enough for her to make a return swing, instead vaulting up and barrelling into her.
She neatly side-steps your sucker-punch, using your own weight to carry your body forward onto her sword.
But you knew that would happen. You duck under the blade at the last second and bring your other fist around.

"It was supposed ... "

She ducks your strike, eyes going wide. Keep her moving.

" ... to be ... "

Other fist, brass knuckles, at her face. She jinks to the side.

" ... a metaphor!"

Your fist connects with her ribs. You hear a crack and Youmu stumbles backward, gritting her teeth and clutching her chest.
"Ahh!" She nearly screams, but manages to keep the pain bottled inside.
You keep your fists up.
Youmu glances up at you, eyes full of hate. Then her gaze goes over your shoulder, her expression changing completely.
You turn to look.

Something flits from the alleyway between two buildings. And another, and another. You glance up and down the street, watching shadows and shapes emerging from the spaces between buildings, from the ends of the street, even over the rooftops.
Youmu straightens up, gritting her teeth, going pale.
"Shit." She mutters.
You just stare. As the figures emerge into the light of the street-lamps, you get a good look at them. Black and grey, wrinkled and pockmarked skin like burnt, shaved monkeys. They chitter and garble from jaws that look like they've come from some nightmare insect. The multifaceted, deep red eyes roll in the sockets.
They start forming a loose circle around you and Youmu.

Youmu rolls her sleeve back and presses a button on her watch.
"Okay, so we were wrong about you." She calls over to you, holding her sword back up again, but facing the things now, not you.
"You were ... what?" You can't tear your eyes away from these monsters. They're like the thing you saw in that video. Exactly like it. Some big, some smaller, but all nightmare fusion of ape and insect.
"We were wrong." Youmu calls. "And now we've alerted the hive."
She backs up towards you. You would turn around and defend yourself against her, but the shock of these slavering things is too much.
"No more fighting." She says, holding her sword out and tracing a circle on the ground around her. "Unless you do exactly what I say for the next," she checks her watch. "Three minutes and 47 seconds, then you're dead and I can't help you."

You glance up at the houses in the street. Some of the lights are on.
"Why doesn't anybody come to help?" You blurt out.
"They can't hear us." Youmu says. "Stop thinking like that and listen to me." She winces, grabbing her chest where you hit her.
"Stand and fight, don't run." She says. "This is only the first wave. We kill a few and they disperse. Then, and only then, do we run. Seven minutes to get to a safe-house."
The creatures are leaving massive gaps in their slowly closing circle. You point to one.
"There!" You say. "We can run!"
Youmu whirls around and grabs you by the collar, eyes blazing. "You run and they'll pick you clean in seconds," she hisses. "Stand and fight."
She lets you go and you just stare at her, wide-eyed. This is too much, you're losing it.

"Let's hope you really are an Oni." She says through her teeth.

The beasts hoot like parrots, scuttling forwards.

[ ] Stand and fight. Cover Youmu's back.
[ ] Stand and fight. Ignore Youmu.
[ ] It's a trick! Run!