Lunasa Prismriver The eldest of the Prismriver Sisters. Species: Poltergeist Title: Poltergeist Violinist Abilities: Performing instruments without using hands; performing notes of melancholy (sounds that calm people down, but cause lethargy if heard for too long). Gender: Female In Prismriver with H, she serves as the violinist.

Merlin Prismriver The second of the Prismriver Sisters. Species: Poltergeist Title: Poltergeist Trumpeter Abilities: Performing instruments without using hands; performing notes of mania (sounds that get people excited, but cause them to dance uncontrollably or lose the ability to converse if heard for too long). Gender: Female In Prismriver with H, she serves as the trumpeter.

Lyrica Prismriver The youngest of the Prismriver Sisters. Species: Poltergeist Title: Poltergeist Keyboardist Abilities: Performing instruments without using hands; performing notes of illusion (sounds lost to the outside world that don't exist in nature; they also harmonize the melancholy and manic notes of her sisters, making the music easier for ordinary people to listen to without side effects). Gender: Female In Prismriver with H, she serves as the keyboardist.

Raiko Horikawa Species: Tsukumogami Title: Percussionist of Phantasmagoria Abilities: Making anything follow a rhythm. Gender: Female In Prismriver with H, she serves as the drummer and percussionist.

Fujiwara no Mokou Species: Hourai Person (Immortal human) Title: The Scarlet Vigilante Abilities: Never aging or dying. Nickname: Mokotan Gender: Female She is a die-hard fan of Prismriver with H (attends every single live show). Apparently, Prismriver with H's selling point is "up-tempo songs with a nihilistic view of life and death." Mokou runs a yakitori stand and refers to herself as a "health-nut yakitori seller."