"You practically murdered our brother! You betrayed what faith I had in you! ...but..." The flames in her eyes vanished, and she dropped her book. "If you really think killing me will solve your problems, go ahead. Kill the only sister who ever had any respect for you, and go back to being alone."
... Eichi... it hurts... but I must... *The black goo on Tsuki shot from her, and swallowed Eichi* It will devour all mana within you... if you don't stop it. ... Eichi... ... No. It doesn't hurt anymore. I will not be saddened by the death of someone who hated me.
"...then I suppose I should 'cut the bullshit', as they say, and end this." Her book glowed, and so did Eichi. "O power that lies at the root of all creation! O memory inscribed in ages past! Here my call and arise before me! Ancient Catastrophe!" 4 orbs of the elements formed around Eichi, then fired their power into where she was at, not harming her, but obviously pouring a heretofore unknown level of power into the area.
Kah! *The goo on Eichi exploded* Uwa... I can't... retain this power much longer... N-no... can't... Eichi, please... don't die... *Tsuki transformed into True Form Tsuki, a large wolf, which proceeded to leap at Eichi, claws first*
"EICHI!" A blur punched True Form Tsuki from the side, then released a blue lionhead-shaped blast of chi, moving its trajectory away from Eichi. It was revealed to be Isaac. "Miss me, babe?"
"Isaac?! What...never mind! I've wasted a lot of my magic energy. Keep it busy while I recover."
*A bolt of lightning shot down at him, possibly an involuntary spell casted by Tsuki in retaliation of the unexpected scream. However, Tsuki would be unable to stop, she's unable to control herself*
He leapt up, over the wave, and kicked the wolf's head a few times before kicking off of it. "I don't believe in things like you. Even if I did, who says furball here is gonna stop without a fight?"
Eichi looked away from the action, a bit shocked at Isaac's words.