Characters / Mnemosyne

Rin Asogi

Voiced by: Mamiko Noto (JP), Colleen Clinkenbeard (EN)

A badass immortal P.I. working out of Shinjiku.
  • Anti-Hero: She's a good person at heart, but she has a rather icy personality. Plus, when she closes the door behind Saya to let her get eaten by various, zombie like creatures, she proves that, despite being on the side of good, she sure as hell won't forgive you for crossing the line.
  • Back from the Dead: Or the closest variant for immortals. Her time spore is removed but thanks to Yggdrasil, her body begins regenerating around it.
  • Badass in a Nice Suit: She's a tough-as-nails P.I who dresses in a rather spiffy three-piece suit.
  • Bi the Way: Being immortal seems to loosen a person sexuality.


Voiced by: Rie Kugimiya (JP), Jamie Marchi (EN)

Rin's sidekick and fellow immortal. Works as a hacker.
  • The Smart Girl: The tech-savvy sidekick.
  • Token Mini-Moe: A slight older example but she always looks younger than everyone else she's around.


Voiced by: Akira Ishida (JP), Todd Haberkorn (EN)

A sadistic mother-effer who exists to make Rin's life (And any other persons in his way) an utter misery.


Voiced by: Sayaka Ohara (JP), Clarine Harp (EN)

A gun toting psycho and Rin's arch-nemesis.

Sayara Yamanobe

Voiced by: Rie Tanaka (JP), Monica Rial (EN)

A scientist behind a number of cruel and terrible experiments
  • Depraved Bisexual: She's a sexual sadist and rapes both Rin and Kouki in episode 1.
  • Dirty Coward: After Rin overcomes her zombie hordes and leaves her at their mercy, Sayara cries and begs for her mother.
  • Immortality Hurts: Apos grants her immortality sometime after episode 1. However she's preserved in the state she's in, and after being partly eaten by zombies and set on fire, Sayara is permanently stuck that way. She lamented that it took over 20 years for the technology to develop so she could walk again.
  • Mad Scientist: At first she dabbles in Cloning (which produced a number of defective pained zombies) and later upgrades to bioterrorism.
  • Sadist: She enjoys hurting people, and not just to scientific ends.


Voiced by: John Swasey (EN)

A mysterious individual with ties to Rin.

Kouki Maeno

Voiced by: Nobuyuki Hiyama (JP), Robert McCollum (EN)

A regular Joe who gets swept into Rin's world.