Shiki and Arcueid fall in love, but after much squabble, they spend a night together, after which she leaves him to fight Roa, alone. However, her death at the hands of Shiki made her incapacitated, using all her power to regenerate herself; thus, requiring the consumption of human blood. She manages to recover enough to fight the Serpent, but not to win; knowing this, Shiki runs to the school, were they were both fighting to the death. Using his Eyes of Death Perception, he manages to kill Roa; However, Arcueid's consumption of blood drives her near to falling to a vampire's instincts and hunger.