Anzu (杏 Anzu?) and Sayaka (さやか Sayaka?) are a pair of zombie sisters and recurring bosses in the OneeChanbara series. Anzu, the younger sister, wields a pair of iron claws while Sayaka, the elder sister, wields a giant iron flail.

Like Anna, they are voiced by Kazusa Amagai in Onechanbara Z2: Chaos, whereas in OneeChanbara ORIGIN, they are voiced by Minami Muta.

As Undead schoolgirls, Anzu and Sayaka are always wearing tattered Japanese school uniforms.

Anzu and Sayaka were Undead spirits who fed at the Gate of Impurity. Anzu was given Saki's Baneful Blood, turning her from a low-tier spirit into an upper-tier one. The zombie sisters were physical manifestations of the grudge held by a pair of assassin sisters who died at a young age. They're weapons were holdovers from their previous lives as assassins.

Anzu and Sayaka were two sisters and members of the Baneful Bloodline. Sayaka was renown for her inhuman strength. Unfortunately, the two sisters were subject to the mortal Baneful tradition of sisters fighting to the death. Sayaka slew Anzu in battle and long regretted it. She died an unknown death sometime after their death battle.

The two sisters were later reanimated through Eva's powers. Having become their mistress, Eva ordered Anzu and Sayaka to kill Aya, another member of the Baneful Bloodline, and take her heart. While Sayaka clearly remembered their tragic past, Anzu remembered little of her past with the sole exception that Sayaka is her older sister.