[Metamor (Ryo)] Dosukebe Elf no Ishukan Nikki 7

Story about an elf in a fantasy world that can only derive sexual pleasure when her life is in danger. She uses magic and potions to make herself numb to pain and durable and gains pleasure from deadly sex with anything from slimes (1), slugs(2), parasites(3), fishmen (4), large insects (5), zombies (6), and orcas (7).

English versions are available from 1-6. In 7, she lets the orcas penetrate her all the way into her body while she feels great pleasure destroying her internal organs by penetrating herself with orca's penis.