Koyomi and Karen had rushed upstairs to the origin of the explosion, Tsukihi and Karen's room.
Once there, Koyomi had found an unconcious Tsukihi lying naked on the floor. Her clothes lay strewn around her and torn up. A neutral faced Ononoki Yotsugi stood beside her, with a gaping hole in the wall behind her.
"Waaah! My room!" Karen exclaims tearfully.
"What's going on up here?!" Koyomi exclaimed as he rushed over to Tsukihi to check on her condition. She seemed fine, simply unconscious.
Yotsugi turned to Koyomi while wiping her finger on her skirt.
"Vengeance" Yotsugi stated with a deadly seriousness.
"Wha-?"
"At least it had been...but I had forgotten that Devil-chan's horrendous sister can regenerate."
Koyomi had felt that Yotsugi had lost all wind in her sails.
"Whoa! Tsukihi's doll can talk?! The batteries really did work!" Karen exclaimed, eyeing over Yotsugi.
"Yes...the batteries." Yotsugi flatly replied.
"What batteries-" Koyomi began to inquire, when he felt a cold draft hit him. He lifted his eyes to the large expansive hole that eclipsed the room of the fire sisters.
"There's a gaping hole in our house!" Koyomi clutched his chest, "Mom and Dad are gonna kill me!"
"The damage looks alot worse than it is Devil-chan." Ononoki plainly states. "I may have gone overboard with Unlimited Rulebook..."
"Devil-chan?" Karen interrupts, turning to Koyomi.
"It's...a long story." Koyomi sighs dejectedly.
"Hey!"
Koyomi turns around as Senjougahara, Kanbaru, and Hanekawa, clutching the photo album, burst their way into the room.
"Don't think this minor distraction will keep us from our business!" Senjougahara bellows.
"Minor?! THERE'S A GAPING HOLE IN MY HOUSE!!" Koyomi shouts.
Koyomi sees a shinning object flying towards him and he lifts his arms instinctively, as a sharp compass sinks into his forearm.
"Gaaah!"
"Nii-chan!!" Karen shouts.
"more troublesome situations that arise due to one Araragi Koyomi!"
Koyomi pulls out the tool and let's it fall to the floor.
"How is this my fault!?" Koyomi asks Senjougahara.
"Everything is your fault. All of it."
Senjougahara steps closer.
"All misfortune that has befallen us all lately can be traced back to you as it's origin."
Senjougahara adopts an accusatory tone.
"I cannot even begin to fathom what other crimes you are guilty of, but rest assured...I will place the proper blame on you for them when I find out what they are."
"you are acting crazy!" Koyomi yells.
"I am a woman scorned! I have the right!"
Senjougahara continues her advance forward as she climbs up the stairs toward him.
"you have proceeded selfishly through life for the last time! you are a child! trying to set things to your best possible outcome. do you have any consideration for those you hurt? any at all?"
"Do you?! because that protractor really hurt-ah!"
Koyomi narrowly dodges a swing from senjougahara's sword.
"It is time to face the truth. You have yet to even consider whether she would accept you Koyomin, the real you!"
"Ngh!" he narrowly moves his body, as the sword once again cuts air.
"The real?...What is she talking about Nii-chan?" Karen asks.
"Your conflict with the abberations, your pact with Shinobu-chan, your immortality... things you have confided in me, but have never told her!"
'That's because...'
"I don't want to involve them!"
Senjougahara's sword stops as Koyomi clamps his hands on the blade. Koyomi flinches as the blade breaks skin, and blood starts to flow from his palms.
"Hitagi, stop!"
"All the blood sweat and tears we have all shed for you Koyomin...for you to keep us all in complacency. to have us maintain your fragile peaceful life!"
Senjougahara places both her hands on the hilt of the sword.
"Is she even prepared to deal with the constant grief that comes with dating you?!"
Senjougahara's turns her sword and slices through his shoulder.
"Nii-chan!" Karen exclaims.
Koyomi falls on his back, clutching the wound as Karen intervenes and kicks the sword out of Senjougahara's grasp.
"Tch." Senjougahara rubs her wrist. "Stay out of my way! This is a lover's quarrel between us!"
"Cutting up my Nii-chan far exceeds what I would call a simple quarrel!"
Karen stretches her arms in a protective stance.
"Now I don't know what is really going, but Nii-chan would never lie to me or Tsukihi! and if you intend to harm my brother I will protect him with all my might!"
"If you really believe he wouldn't keep secrets from you, just turn around and look at him."
Karen turns to Koyomi, and audibly gasps.
Koyomi's wounds quickly begin to heal as his blood seems to be mending his flesh together.
"N-N-Nii-chan!" Karen stares on, "Your wounds...they are healed!"
And with that, he could hide the cold dark truth no more.