Corpse Party Blood covered: ...Repeated fear.
A friendship ritual gone awry transports high school student Ayumi Shinozaki and her friends to an alternate reality version of a tragedy-stricken institution that stood on the site of their own school long ago. As the vengeful spirits of elementary school students threaten their lives and their sanity, their only hope of survival–much less escape–is to uncover the chilling details surrounding the murders of those trapped before them.

Corpse Party: Book of Shadows
Before, during, and after the events of Corpse Party—in the canon universe, as well as in several alternate timelines—the students of Kisaragi Academy, Byakudan Senior High, Paulownia High, and Musashigawa Middle School had far more experiences within the cursed halls of Heavenly Host Elementary than the stories typically recount. How would events have unfolded, for example, in a universe where each student went into the Sachiko Ever After ritual with an unconscious awareness of everything that was going to happen to them? What might’ve occurred to Mayu if she’d never interacted with the ghostly children in the school infirmary? What might’ve occurred to Yuka if she’d been caught during the harrowing chase in the second wing? What might’ve occurred to Seiko if Naomi had gotten to the bathroom just a bit earlier?

On the other side of the coin, how did Naho actually get into Heavenly Host, and whom did she come with? What was Tohko’s relationship with Kizami, and how did that result in a lost tooth? And what connection did Ms. Yui have to the cursed elementary school prior to ever taking part in the Sachiko Ever After ritual?

Most crucially, what happened to the survivors of the previous incident after their escape? How did the loss of their friends affect them? And what does all of this have to do with the mysterious tome known as the “Book of Shadows”…?

Corpse Party: The Anthology - Sachiko no Renai Yuugi - Hysteric Birthday 2U
Sachiko Shinozaki, tragically murdered at age 7; such a sweet girl, taken away at such a young and tender age! Sure, she may have reacted by becoming a bloodthirsty, vengeful spirit responsible for the deaths of countless other children, as well as their erasures from history, but everyone knows that in her heart of hearts, she’s just an ordinary, innocent little 7-year-old…right?

Well, no. Because you see, today is her birthday! She’ll be turning…7 again, naturally. But in celebration, she’s decided to grant all her victims 24 hours of amnesty from their suffering by gathering them all together for a…hysteric? birthday bash. There will be party games, entertainment, adventure, and most of all, romance!

Join Sachiko and the lovable cast of damned souls from previous Corpse Party games—along with a few new faces—as they take the very concept of genre and toss it aside. Prepare to experience terror, discomfort, joviality, and confusion in equal measure as Heavenly Host Elementary plays less-than-heavenly host to cooking contests, co-ed mixers, interpretive stage drama, traditional party games, and Lovecraftian horrors alike.

Because you know what they say: Hell hath no fury like a 7-year-old girl bored…

Corpse Party: Blood Drive
While some members of Kisaragi Academy's class 2-9 returned from their trip to the hellish, otherworldly elementary school known as Heavenly Host, many did not, and the survivors struggle on a daily basis to preserve the memories of those who were unfortunate enough to perish within its halls.

There is one ray of hope, however: an ancient tome known as the Book of Shadows. Class president Ayumi Shinozaki attempted to make use of its magic to resurrect her deceased friends once before, but only compounded the tragedy in the process. And now the book has been lost.

Or has it? When a spiritual photograph turns up, suggesting the Book of Shadows may now reside in the tattered remains of Heavenly Host, Ayumi becomes obsessed with finding it so she can make one last attempt to set things right.

What follows is nothing short of a nightmare.