Finally Ain't Filler

"You know that Cocytus isn't actually a river, right?"
"Yeah, I know, my namesake is a frozen lake. But it still counts."
"Whatever you say, Iceman."
"Up yours, Amnesia."
"Hey! Don't you know its rude to have a side conversation while playing cards?"
"Or are you just trying to cheat now, Kestrel?"
"No, I am not! In case you've forgotten, Lethe, I just learned how to play this yesterday!"
"See now, that's why I call her Amnesia."
"Oh shut up, Iceman."
"Less talk, more play, yeah? Your turn, Kestrel." Phlegyas said.
Kestrel dealt her card and asked, "Anyone feel like waking Acheros up just for the heck of it?"
I wouldn't mind.
"Acherus, what are you doing out there anyway? Apart from flying, I mean."
Flying is the whole point. It's fun, it's exhilarating and great, feeling the wind going through your feathers and all. It's just pure fun.
"Oh. Don't you think Acheros is rather lazy? Finally gets the body and he sleeps."
Hey guys...
Acheros woke up with a sudden jolt, bumping into Kestrel's chair and causing her to spill all her cards on the table.
"Ah ha! I knew you were cheating!" Lethe pointed at the cards fallen on the table, all duplicates from different decks.
"And I would have gotten away with it if the pig didn't suddenly wake up and kick my chair." Kestrel muttered, turning around. "Whats with you anyway?"
Acheros rubbed his head where he hit the back of her chair and sat up.
"Didn't any of you hear that?"
"Hear what? I can hardly hear anything through the noise the class is making."
"Sounded something like "Hey guys", or something like that. It freaked me out, that's why I woke up."
"Could it be Styx?"
Very... observant... A weak voice whispered in their minds.
"Aw crap, Styx, what's wrong?"
Not.. feeling too good... Need a lil help over here....
"Where are you?"
Outside.. combat room... I think I... kinda... impaled my arm...
"Hells, how do you manage to do that!" They sprinted out of class and Acherus took control of the body again.
"Acherus, I hope you haven't been wasting your energy on random bouts of magic!"
"I've got enough juice to heal her I think, but I won't know until I see how severe it is!"
It's not.. that bad...
"Damn, you can hardly speak, even mentally! Not bad, sure!"
Turning into the corridor, they almost ran straight into Karasondrias.
"My, my, where are you students going to in such a hurry?"
"Sorry, teacher! Someone's hurt!"
"Hurt? Bring me to her."
Well lucky me... Nothing to... worry about.. now...
A bloody scene greeted them. Styx was slumped against the floor, her blood a large pool around her. Her left arm was impaled by a spear and was the source of all the bleeding, though other multiple minor cuts contributed.
"Hey..." Styx slurred, obviously close to unconsciousness.
Kara wasted no time and quickly assessed the situation while Acherus went forward and started channeling his healing energy into her various wounds.
"Cain! Do you have enough energy to seal the wound if I removed the spear?"
"I can seal the wound, but the inner tissues are wrecked."
"It does not matter, the priority is to stop the bleeding! She is already-"
"Suffering from severe blood loss, yes, I know ma'am. She is in shock." Acherus said, a shade too testily.
Cocytus called up all of the pooling blood into a globe.
"Still warm and alive, the blood, it should still be okay if I funnel it back into her."
"Not too much, slowly and small amounts at a time, Iceman! Her heart isn't pumping well!"
Kara stared at Cocytus.
"You have much explaining to do after we save her, Mister Greywing. For now, I will keep her body warm and maintain her heart." She summoned up small patches of fire around Styx. "Ignore the fires. They don't burn." She took ahold of the spear. "When I pull it out, you will funnel the blood in. When you-" She gestured towards Acherus. "-decide it's enough blood for survival, say so and seal the wound. Alright, enough talking, on my mark. One, two, three!"
She yanked hard on the spear and pulled it right out of the wound. The globe of blood extended small tendrils and fed straight into her wound, at the same time preventing further loss of blood.
The process caused intense pain to her and her little body jerked and twitched with the agony as she screamed raggedly.
"Iceman, stop! Now!" He quickly channeled as much as he dared to knit the blood vessels and skin back together, Kara flowing strange draconian energies into Acherus to aid him. After a minute of intense concentration, the skin grew over the wound, leaving a circular scar behind.
Acherus almost followed Styx in fainting with exhaustion. "I didn't manage to completely heal the tendons. She can't use her arm. At all. Until someone else with more energy can heal her."
"I could pass the energy to you. I have much, but I have never used healing magics and would be unable to heal her." Kara said, startling them. They didn't expect a teacher to be that generous, for lack of a better word.

A lengthy time, a blatant disregard of natural healing spans and many explanations later, they were seated in comfortable chairs around a table with Kara among them. Except for Styx, who was lying on a bed. Actually, they were in her class, all that was just an illusion. Albeit an extremely convincing illusion.
"I cannot conceive of a reason as to the origin of your abilities. They seem made from the stuff of fiction." Kara shook her head slowly. "Students. How amusing that the young always find something to amaze the old with."
They didn't tell her about what Lethe could do or what Styx could do, simply saying how they knew she was hurt that she messaged them by phone.
"Alright. Miss Oathmaker, please do see the matron nurse if your arm still pains you or if it doesn't feel as it should. And do drink more water, you need to replenish your body fluids. I hardly think that Mister Greywing's ability was able to give you enough fluids back."
"Yes ma'am. And uh, ma'am?"
"Yes?"
"Could you do us all a favor and not tell anyone else about this?"
"Fine. Do take care of yourselves. Well, you all can return to your class."
And Lethe whispered to Styx as they left, "What were you doing in the combat room anyway?"