40 Fathoms (Saera, Hanako)

"A polearm?" Hanako echoed. It was indeed a stroke of bad luck that two Shinigami with exceptionally large Shikais would be trapped in a steel box on the ocean floor.
"Well, you could release it in one of the big rooms to use your ice. The last one was big enough even for me to release Bakumusha. But it still would be much too dangerous to use my Shikai down here."

Even without using Bakumusha's true and secret ability she couldn't risk it. Her Shikai could be used as a normal sword, without using the chain, and the massive blade and the armor sleeve would definitely give some kind of advantage down here. But as far as Hanako could tell, the danger involved would be much higher than the advantage gained. A normal Katana would give her a lot more maneuverability. The soothing vibration emanating from her sword told her that Bakumusha shared her assessment of the situation.

Hanako just wanted to respond to Saera's theories about this all not being a coincidence. Normally, without evidence, she would have dismissed it as paranoia. However, Hanako had some unique experiences that made her more inclined to accept such theories as possible. It may all be orchestrated, it may all be coincidence.

Before she could say anything the man that sat in front stirred and looked away from the other humans. He raised a hand and the screaming men fell silent. Then he seemed to hear something, turned fully around and let out a cry. With a start Hanako had her sword half drawn before she remembered that there were only humans with them.

" 'the fuck you're doin' on my station?" The man yelled.

The other humans looked around the room and at each other confused. Hanako looked at the man. He looked straight back. Suddenly he had something black in his hand. The light was too dim to make out exactly what it was, but Hanako was fairly certain it was a weapon.

"I asked you what you're doin here!" He yelled again. "Are you responsible for this shit?" He pointed behind him. The other humans still looked confused and increasingly frightened.

"Harry...what is wrong?" It was the woman who asked.

"Can't you see them? Those two there?" He pointed at Saera and Hanako with his weapon. It seemed to be a gun of sorts.

It was the moment Hanako used to act. It was one of the two abilities Bakumusha granted her even in his sealed state. It required no movement or effort on her part. The effect was little, but when the distance was so small and her target so clear, it was enough.

The man called Harry suddenly looked puzzled and his gaze lost focus for a second, as if he was trying to remember something. It didn't last long...but long enough.
With a quick flash step Hanako was next to him and had the gun wrenched out of his hand and smashed in her hand before the effect of her memory slip ability finally wore off completely. Now finally the other three humans realised that something really was off, when Harry's gun flew from his hands and disintegrated in thin air.

'Only he can see us.' she realised.

"Listen." She said aloud. "We're not here to harm you. We're not even here by choice. Stay calm for a moment and I explain who we are and how we got here."

Harry was too shocked about the speed with which Hanako had disarmed hin. Obviously not one very used to supernatural beings. The other ones just watched him stare blankly into thin air for a few moments.

"Harry, what's wrong?" Asked the woman again.

"Wait a moment." He said, listened for another few seconds and then turned to the other humans.

"There are some...ah...Shinigami with us." He started to explain. The others made some grunting noises and nodded. Everyone, even non-spiritually-aware humans knew the basic outlines of the supernatural world. He gave a summary of Saera's and Hanako's story and everyone calmed down a little. Harry still seemed uneasy and looked anxiously from Saera to Hanako and back and especially kept eyeing their swords.

"I'm Harry," he began an introduction.
"This is my wife Sally. Bob and Mike. We are scientists. You'd be surprised how much of the ocean floor is still unknown to humanity."

"Interesting." Said Hanako and turned to Saera, so that her back towards the screens and the humans, although only one of them could see and hear her.

"This all looks like nothing more than coincidence. But I'm inclined to agree with you: this doesn't feel right."

While Hanako talked to Saera, behind her back there was movement on the monitors. On one of them something could be seen drifting through the picture. It couldn't be seen long, but it was big and it was clearly silhouetted against the dark water. It seemed to be completely white and big. It might have been a whale, the way it moved through the water…
Suddenly it turned and the silhouette became eerily humanoid.

And none of the humans or Hanako were able to see it, because all of them had their backs to the screens.