KILL la KILL IF: The World Where Senketsu Didn't Burn Out
A half year has passed since the final battle in space—since Senketsu burned away, leaving Ryuuko with nothing but a scrap of memory and a father's Scissor Blade. She drifts through an ordinary high school, doodling a black sailor uniform in the margins of her notebook, skipping class to chase rumors, and shutting out the friend who keeps texting to ask if she's alive.
Then a letter arrives in her shoe locker, written in round, bubbly handwriting she'll never forget: Harime Nui is alive, Senket
KILL la KILL IF: The World Where Senketsu Didn't Burn Out - Reunion at the Abandoned Hospital — The Sister's Truth and the Final Fragment
The air in the abandoned hospital grew colder as the night deepened.
Moonlight filtered through the cracked windows, casting a pale glow on Ryuuko's face as she lay on the bed. The bandage on her left arm had hardened with dark, clotted blood.
Ryuuko stared at the ceiling. Her eyes were open. But there was no light in them. Just two dark holes where her eyes should be.
"Ryuuko-chan."
Mako sat by the bedside, clutching Ryuuko's right hand. A warm hand. A sweaty hand. A hand that had held on for hours, dozens of times over.
"Ryuuko-chan, can you hear me? It's me. It's Mako."
No response. Ryuuko's fingers lay limp in Mako's grip. Her breathing was shallow—just a faint rise and fall of her chest.
"Ryuuko-chan... please. Say something. You can be angry at me. Just—look at me."
Mako's voice trembled. Tears spilled over again. They fell onto Ryuuko's cheek. Ryuuko didn't even blink.
(...I don't feel anything.)
Inside Ryuuko's heart, there was nothing. The pain of losing her arm, the grief of losing Senketsu—all of it felt far away now.
(What am I even living for?)
Nui's words echoed in her head, over and over.
"You're not human."
"A weapon made of Life Fibers, built to kill."
"Satsuki was using you."
(That's right. I'm a weapon. Built to be used.)
(So there's no point in doing anything anymore.)
Ryuuko slowly closed her eyes. The darkness was comforting.
Then—
"Ryuuko-chan!!!"
Mako squeezed Ryuuko's right hand, hard.
"I know! I remember what you told me before!"
Ryuuko's fingers twitched, just barely.
"You said Senketsu was your partner! Your one and only, precious partner! That's what you said!"
Mako's voice sent a small ripple into the depths of Ryuuko's heart.
"Senketsu isn't completely gone yet! There are seven fragments, right!? You said you were collecting them! There's four left! If you collect four more, Senketsu might come back!"
Ryuuko's eyelids trembled faintly.
"So please! Don't give up! You're my friend, Ryuuko-chan! I can't stand seeing my friend like this—looking like she's dead!"
Mako pressed her forehead against Ryuuko's hand. Tears traced down between Ryuuko's fingers.
"Please... come back, Ryuuko-chan. Be my source of relaxation again."
Beneath the bandage on Ryuuko's left stump, a red light flickered.
Ryuuko slowly opened her eyes. Her vision blurred. The ceiling looked warped.
(...Ah.)
Ryuuko moved her right hand, just slightly. She squeezed Mako's hand back. There was almost no strength in it. But she moved.
"...Mako."
Her voice was hoarse. Her throat felt like it was stuck together.
"Ryuuko-chan!?"
Mako looked up. Her face was a mess of tears. And still, she tried to smile.
"...You're so loud. Your voice is way too loud."
Ryuuko said it quietly. Mako nodded over and over, her face caught between crying and laughing.
Then—click, click—footsteps echoed from the hallway. Quiet, but steady. Mako flinched and looked toward the entrance. Ryuuko slowly turned her gaze that way too.
In the moonlight stood a single figure. Long black hair. Sharp, beautiful, violet-tinged eyes. An air of nobility and intimidation that made you want to keep your distance. It was Kiryuin Satsuki.
"...So you're awake, Ryuuko."
Satsuki stood with her arms crossed, looking down at Ryuuko. Behind her stood Nonon, blond twin-tails swaying.
"Well, well. You look better than I expected. I thought you were dead, you idiot Ryuuko."
Nonon poked her head out from behind Satsuki. Ryuuko looked at Satsuki's face.
Nui's words came back to her.
"Satsuki was using you."
(...Using me.)
Ryuuko's body tensed slightly. Wariness. Unease. And then—just a little—hope.
Satsuki knelt beside Ryuuko. The moonlight illuminated her profile sharply.
"Ryuuko. I can imagine what Nui filled your head with. She told you I was using you, didn't she."
Ryuuko didn't answer. She just stared into Satsuki's eyes.
"One thing Nui said is true. You are made of Life Fibers. You are a Life Fiber weapon, created by Ragyo through human experimentation."
Ryuuko's breath stopped for an instant. Something cold spread through her chest.
"...So it's true after all."
Ryuuko's voice was shaking.
"But, Ryuuko."
Satsuki looked straight into Ryuuko's eyes.
"You are my sister. My one and only sister by blood. That is a fact. Whether you're made of Life Fibers, whether you were built as a weapon—that fact doesn't change."
Ryuuko's eyes went wide.
(...Sister.)
"I kept you at a distance. I was afraid that if you learned the truth about yourself, it would hurt you. I wanted to protect you from Ragyo's curse. ...But that was just my own selfish assumption."
Satsuki's voice dropped, just slightly.
"You were fighting alone. You lost Senketsu, you lost your arm, and still you tried to stand. What I should have protected wasn't your secret—it was you."
Satsuki wrapped both hands around Ryuuko's right hand. Cold hands. But there was definite strength in them.
"I'm sorry, Ryuuko. As your sister, I couldn't do anything for you."
Satsuki bowed her head deeply. Ryuuko felt the coldness of Satsuki's hands and bit her lip.
(...What the hell is that.)
Her eyes burned.
"...Don't give me that."
Ryuuko spoke with a trembling voice.
"Don't play the big sister now. I was alone the whole time. You, Dad, everyone—no one was there. ...So don't start saying stuff like 'sister' and 'I wanted to protect you' now. Don't be selfish."
Tears spilled over.
"...But."
Ryuuko squeezed Satsuki's hand back.
"...I was happy. That you called me your sister. ...Thanks, Sis."
Satsuki's eyes wavered, just slightly. Behind her, Nonon sniffled.
"...Honestly. Neither of you sisters knows how to be honest."
Nonon said it and turned her face away. Mako, tears streaming down her face, piled her hands on top of both of theirs.
"Waaaaah! Thank goodness! Ryuuko-chan made up with her big sister!"
"We weren't fighting in the first place!"
Ryuuko shouted, her voice thick with tears. Satsuki let out a small laugh.
"...Ryuuko. There's more. About Nui's objective."
Satsuki stood and looked down at Ryuuko.
"Nui is gathering Senketsu's fragments. But her goal isn't Senketsu's revival. Nui intends to absorb the Life Fibers dwelling in the fragments into her own body and complete a replica Kamui."
"A replica Kamui...?"
Ryuuko tried to sit up and winced.
"Yes. Of the four remaining fragments, three are stored in the underground arena of Honnouji Academy—Nui's base. And the last one, Nui has already woven into her own body."
Ryuuko clenched her fist.
"...That bitch. She's planning to make Senketsu hers."
"Exactly. But, Ryuuko. There are still Life Fibers remaining in your body. If you touch Senketsu's fragments, the Fibers in the fragments and the Fibers in your body will resonate. If that happens, there's a chance you can compensate for the function of your lost left arm."
Ryuuko stared at the stump of her left arm. Beneath the bandage, a red light still flickered faintly.
"...Can I fight?"
"It's not a question of whether you can. You will fight, Ryuuko. To take Senketsu back. And to crush Nui's ambitions."
Satsuki extended her hand to Ryuuko. Ryuuko stared at it.
(...I can still fight.)
(Senketsu is still inside me.)
(Then—)
Ryuuko took Satsuki's hand.
"...Yeah. I'll do it. I'll beat every last one of them."
The light had returned to Ryuuko's eyes.
Mako came back from the corner of the hospital, carrying a box of bandages and disinfectant.
"Ryuuko-chan! Use these! I'll protect your arm properly with bandages!"
Mako began carefully covering the stump of Ryuuko's left arm with fresh bandages.
"...You've gotten better at wrapping bandages."
Ryuuko said it quietly.
"Ehehe, my dad taught me! He said you might get hurt again, Ryuuko-chan!"
Ryuuko gave a wry smile. Nonon walked up beside Satsuki.
"Lady Satsuki. Here."
Nonon pulled a small cloth bag from her pocket. From inside, a fragment of cloth emitting a red glow appeared.
"That's... a Senketsu fragment!?"
"Yes. Lady Satsuki entrusted it to me. In case the idiot Ryuuko did something reckless again—I kept it as insurance."
Nonon pressed the fragment into Ryuuko's right hand.
"Here, take it. It's part of your partner, isn't it."
Ryuuko gripped the fragment in her right hand. It was warm. Definitely warm.
"...Senketsu."
Ryuuko slowly brought the fragment toward the stump of her left arm.
In that instant, the fragment blazed with light. Red light flowed from her fingertips into the stump of her left arm. Beneath the bandages, the Fibers resonated. The Fibers in Ryuuko's body and the Fibers in the fragment called out to each other.
A red light kindled at her fingertips.
"...Whoa."
Ryuuko stared at her right hand. Her fingertips were glowing red. She felt as though the sensation of her lost left arm had returned, just a little.
(Senketsu... you're still inside me.)
Something warm spread through Ryuuko's chest.
"...Let's go, Ryuuko. The remaining three fragments are in the underground arena. We'll find out what Nui is plotting."
Ryuuko nodded.
"Yeah. Let's go, Sis."
The four of them left the abandoned hospital behind.
An old passageway leading deep beneath Honnouji Academy. The four moved cautiously through the darkness. Nonon walked at the front, checking her phone screen and directing the way.
"Turn right at the next corner. Two guards. They're wearing the new model Goku Uniforms."
Nonon's intel was accurate. Around the corner stood two guards from the Nui faction.
"Who's there!"
One of the guards activated his new model Goku Uniform. The black uniform pulsed ominously.
"Ryuuko, go!"
Satsuki drew the guards' attention. Ryuuko drew her Scissor Blade one-handed.
"Uwoooooooh!"
Even without her left arm, Ryuuko's physical prowess was intact. The Scissor Blade tore through the guard's Goku Uniform.
"Guaaah!"
The guard went down.
"Now!"
Nonon had circled behind the other guard.
"Good night."
Nonon's strike hit the guard's neck. He crumpled like a puppet with its strings cut.
"Nonon, you can fight?"
Ryuuko said, surprised.
"Who do you think I am? I was one of the Elite Four. Unlike you, I can fight without an arm."
"...That's not comforting at all."
Ryuuko shouted.
"Ryuuko-chan! Nonon-chan! Stop fighting! Come on, let's go!"
Mako called out in a whisper from behind cover. The four pressed on through the passageway.
The underground arena. Deep beneath Honnouji Academy lay that massive space. Once, students had been forced to fight to the death there under the guise of Goku Uniform performance tests. Now it served as the Nui faction's base, wrapped in an eerie silence.
At the center of the arena stood a stone pedestal. On it, three red lights lined up in a row.
"...There they are."
Ryuuko stared at the pedestal. Senketsu's fragments. The three fragments emitted faint Life Fiber reactions.
"Be careful, Ryuuko. It could be a trap."
"I know."
Ryuuko readied her Scissor Blade. Satsuki and Nonon spread out to the left and right. Mako hid in the shadows by the entrance.
"Ryuuko-chan, do your best!"
Mako's voice pushed Ryuuko forward. Ryuuko ran. Straight for the pedestal.
Then—
"Ahahahahahaha!"
Laughter rained down from the ceiling of the arena. Ryuuko stopped. She looked up. Pink hair swayed softly in the darkness.
"You finally came, Ryuuko-chan! I've been waiting so long I got tired of it! And Lady Satsuki is here too! What a fun day this is!"
Nui landed lightly in the center of the arena. Around her right hand was wrapped a dark red cloth.
"Harime Nui...!"
Satsuki's voice dropped.
"Hey, hey, Lady Satsuki. It's been so long. Have you been well? I've been wanting to see you, wanting to see you so badly I couldn't stand it."
Nui spoke to Satsuki in a cloying tone.
"...That doll-like smile of yours makes me sick."
Nonon glared at Nui.
"Oh, Nonon-chan. Still so foul-mouthed. But I don't dislike that cheeky side of you."
Nui giggled.
"Nu
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