Kisuke smiled at the dying Line, "'Tis I."
Kisuke then checked her whole situation once again in greater detail and started some first-aid measures, "Does it hurt?"
However, Line didn't notice his actions as all emotions she had been keeping, gushed out along with her tears, "...I... don't want... to die..."
All this time, she has been toughing things out. With the use of the things that she'd learned from Sona, Line was able to fend off Valletta, creating an opportunity to escape for the others with her.
Thanks to that, Valletta lost her interest in the others and focused on the 'weird' Line, who seemed to be capable of using all sorts of magic without chanting, albeit, very weakly.
Valletta 'interrogated' Line but the latter didn't even speak. In any case, her interest was in line with Line's goal of creating enough time for the others to escape. She also already stopped thinking that she'd be able to come out of this battle alive.
The more the fight went on, the more Valletta became curious at Line's ability. In the end, she attributed it to a very rare skill and decided to take her alive to be brought for her God's entertainment.
Catching on to that, Line spat in Valletta's face, instantly angering her and making her impaling Line with her cursed sword after making many large but nonfatal cuts all over her body, leaving her to die from blood loss and cursed festering wounds that continuously inflicted large amounts of pain and suffering.
Notwithstanding, she didn't say anything and thought that she was able to successfully give her comrades a window of chance to survive.
When Ais and Bete arrived, Line was already on her deathbed. But even then, Line endured it with her blurring vision and asked, "Were they able to get away?", in a stuttering manner.
As soon as Ais nodded at her question, relief came over Line as she peacefully awaited her death, doing her best not to think of anything else at this moment as she'd surely regret it.
But her trying to calm herself down and emptying her mind didn't get her desired results when it suddenly became noisy beside her and a certain man she was trying her best to forget suddenly appeared with a smile.
At that point, all that she was trying to keep in went out as she recalled all the days she adventured with the members of the Hestia Familia. Especially the memories about the man who gave her back her aspirations and motivation to try harder to achieve her dreams.
"I don't want... to die...!", repeated Line with greater energy than before. But thanks to her pushing herself, she started coughing blood which blocked her breathing. Still, after seeing Kisuke's face, it reminded her of what she wanted to do and what she wanted to reach. Her journey had just started and Line couldn't just let it go. Even if she knew that it was already impossible, she wished for a miracle. She wished she could still join their adventure towards the unknown.
Hearing this, Ais could only close her eyes and grit her teeth while Bete decided to look away. Both of them knew that at this point, it was already impossible to save Line even with the most expensive potion and anti-curses. That was what common sense and experience dictated to them anyways.
Kisuke's smile grew wider when he saw and felt Line's will to live, "Easy now, girl. You're not dead yet since you can still speak with such enthusiasm."
Of course, Kisuke's joke felt out of place and both Ais and Bete couldn't believe they were hearing it. Nevertheless, Kisuke disregarded them and continued, "I wanted to teach you how to cure this thing yourself, but we won't have enough time and you'd die for real. Instead, I'll show you an ability that belonged to a friend, which in my opinion, is the greatest form of healing."
Kisuke then took out a token. It was the token that contained Inoue's 'Rejection' ability. As the orange barrier covered Line, Kisuke started explaining, "Instead of helping, aiding or guiding the body's regenerative process, this ability directly affects reality itself. More specifically, it reverses causality itself, making it so that you didn't take any damage at all. Meaning, this ability makes it so that you were never injured in the first place."
Line's head was a mess and she could barely hear everything he said. However, she still tried to remember all of it despite her inability to understand it.
"Well, this is just a copy of that ability, a very poor copy that hardly does what it's meant to do.", Kisuke then suddenly yanked out the cursed sword sticking on her belly without any hesitation, making Line groan in extreme pain. "That said, it could only remove the curses and reverse your wounds for a bit. It'll be your job to heal yourself. Just think of it as practice."
But Line didn't mind the pain and understood that Kisuke just gave her another breath of life. Although she also knew that she couldn't heal her current wounds with her current ability, when she heard Kisuke uttering the word 'practice', she figured that Kisuke was expecting her to surpass her current self.
And indeed it'd be thanks to this that Line would have a breakthrough with her overall Magic capabilities, surpassing even Riveria's manual control of Magic Power. And unknowingly to Kisuke and Line, the latter would have some insight regarding the 'Rejection' ability, forever changing the course of her future.
A few seconds later, a small green magic circle appeared on top of the wound on her stomach. After a minute, multiple magic circles already covered her full body, all aiming at her wounds, though most of them would fail and fizz out of existence before reappearing again.
However, each iteration of those magic circles were an improved version, signifying Line's improvement in realtime. 'Death really is the best training partner.', thought Kisuke as he stood up while carrying the cursed sword in one of his hands.
Facing Ais and Bete who both had stupefied expressions, Kisuke said, "Wallenstein-san, please look after Line-san for a moment. We don't want anything to disturb her while she's healing herself."
"...Where are you going?", asked Ais.
Kisuke thought for a moment before answering, "Err... to issue a complaint?"
"...C-complaint?"
Kisuke turned around and started walking away, "Yep. They did beat up my precious student after all, of course, I'm going to complain."
Ais still couldn't wrap her head around Kisuke's words as she watched him walking away until he reached his destination thirty meters away from them, where he faced the wall on his left side.
Kisuke started swinging around the cursed sword in his hand for a few minutes as if he was very bored.
"...What is he doing?", asked Bete after being healed a bit by an Elixir. He didn't dare to ask him directly, since he figured that he couldn't hold a candle against him after that one single exchange between them which immediately disabled him.
To that question, Ais could only shake her head.
After a few more minutes, Ais was about to ask him what he was planning to do, but he suddenly uttered to himself, "Finally~! You're here."
Immediately, Kisuke swung the cursed sword at the wall a few times before it suddenly collapsed into pieces, creating a large hole in it. The wall, which only Gareth was able to break when he used all his might, was instantly torn into pieces with just a few swings of a sword.
Stepping forward, Kisuke spoke with a jovial tone, "Excuse me~! I'd like to issue a complaint to those who smell like my student's blood! And, in fact, a solution for that~!"
From the hole, Bete and Ais heard the panicked but familiar voice of Valletta, "W-who are you!?"
"Kisuke Urahara, your everyday shopkeeper~!" A second later, Bete and Ais saw blood spurting from the hole with a few heads rolling out. They couldn't even utter a single word before they were decapitated.