A/N: I hope that I've been keeping everyone in character. It's one of my little pet peeves.

This chapter is probably my favorite just because of the prompt. Oh, this is in Lavi's POV by the way.

"Leave me alone!"

"No! Stop walking away!"

"I said leave me alone! I don't have time to deal with you right now! I'm busy!"

"I don't care!"

"Would you stop following me?"

"NO!"

"Ugghhhh! You are so infuriating!"

"Just stop walking away, dammit!"

'Yu-chan and Kasia are fighting? Uh-oh~' I thought, chasing after them. Across the foyer, Kasia was trying to get away from Kanda but Kanda was persistently chasing after her for some reason.

As I got closer to them, I was surprised to see Kasia wearing casual clothes again. This time she wore a white sleeveless dress shirt with a black corset belt, a knee-length black skirt, black tights, and brown mid-calf boots. Her black szabla sheath was attached to her corset belt.

"I've had it with you! I challenge you to a duel! No conditions, just a plain duel!" Kasia yelled, stopping on the stairs, swiveling around and glaring down at Kanda.

Kanda answered by continuing past her and up the stairs to the training room. Kasia stormed after him.

Excited murmurs buzzed about the foyer. A group of gossiping Finders ran past me, making bets about the fight along the way. Allen and Lenalee came up to me, equally concerned expressions on their faces.

'This doesn't look good.' I followed after the Finders, Lenalee and Allen right behind me.

By the time we got there the two were already at it. They had both activated their Innocence and were already bruised and bleeding.

Kanda kicked off of a ledge on the wall, slamming his Mugen where Kasia once stood. She appeared behind him, delivering a slash to his back then kicking off him to get away before he could land a hit on her.

It was true that Kanda had superior strength and speed when compared to a normal human. But no matter how fast he was, Kasia was much faster, especially with her gravity control ability and the fact that she wasn't wearing her heavy armor. She made speed and agility her forte to make up for inferior physical strength.

Kanda crashed to the ground, the gravity between him and the Earth having been temporarily increased tenfold. He got back up immediately afterwards, parrying Kasia's attack and shoving her away.

"Ningentou!" A coat of energy covered Kanda's Mugen and generated an energy blade in his other hand.

This was not just a plain old duel. Neither of them were holding back. If someone didn't stop this soon, they could get seriously injured or worse. Kasia couldn't heal as quickly as Kanda. She was already at a disadvantage from not having her other two sheaths and being exhausted from her missions.

"Have they ever fought like this before?" Allen asked, already seeing how serious this was becoming.

"No, they've never fought before. This is the first time I've seen them go against each other in combat." I answered. This was true. I had never seen the two even argue before Valentine's Day the entire time I had been in the Order.

"Kanda! Kasia! Please stop!" Lenalee begged, on the verge of running into their battle. Both seemed to ignore Lenalee's pleas, continuing to exchange blows.

"This isn't good. Lenalee, go get Komui. This needs to stop. Kasia is going to get hurt," I instructed.

Just as I said that, Kasia let out a yelp, causing us all to look back at the fight. Kanda had used his Hakka Tourou on her. She had barely been able to dodge. The attack hit her left arm, leaving three long, deep gashes stretching from her upper arm to her elbow.

Kasia tightened her grip on her szabla and launched at Kanda, suddenly disappearing from sight. Before anyone knew what had happened Kanda was on the ground, Mugen lying a couple yards away behind Kasia. He was glaring up at Kasia, who was returning his glare with one equally as fierce. She had her Celestial Quasar pointed at his throat, the tip pressed close enough to draw a little blood. It was over.

Surprisingly Kasia smiled at him, sheathing her szabla and holding out her good arm to help him up. Kanda, however, smacked away her hand and got up himself.

Kasia's smile fell into a scowl. "You know, this is another thing I hate about you. You have such poor sportsmanship. A true warrior is supposed to accept defeat with grace and learn from their mistakes. And you don't channel your anger into strength like I do. Instead, you let it control you. That will be your downfall one day."

"Che. Whatever." Kanda pushed past her and retrieved his Mugen.

"Gadał dziad do obrazu, a obraz do niego ani razu," Kasia scoffed. [1] With that, she left the room, probably to go to the infirmary and her room to change out of her now tattered skirt.

Kanda didn't go after her like he had earlier. He glared at the remaining people in the room, prompting them to make a hasty exit to escape his wrath. The large wound on his back and all his other wounds were already gone. The only evidence they were ever there were the rips and tears in his black, sleeveless muscle shirt.

Kanda saw Lenalee, Allen, and me still standing here, throwing a glare at us before leaving as well. Allen and Lenalee went after him.

And so I was standing here all by myself. I sighed, a small smirk working its way on my face. "Must I always come in and save the day?"

[1] A Polish proverb that is equivalent to the English phrase "It's like talking to a wall."