R*pe of the Undead

Akane Kisaragi,
a blackbelt with unbridled spirit and zest for life.

Yukiko Kisaragi,
thoughtful and quiet with a knack for judgment.

An abandoned school,
into which the girls sneaked on a midnight dare.
After getting up to the roof Akane figures they
can call it a night when Yukiko says forbodingly,

"I don't want to go back inside."

Her words are thick with significance.
But her judgment doesn't change the fact they have to go inside again
to get down off the roof. Yukiko trembles with fear, gripping her sister,
who consoles her as she puts her hand on the rooftop door.
That's whey she notices something that only now is apparent.

15 pages + 272 variations + bonus story CG collection