[Fumihiro] The Ninja Girl Who Became a Stone Statue! (2D Comic Magazine Joutai Henka de BAD END! Vol. 1)

A young kunoichi's mission takes a nightmarish turn when she encounters a robed sculptor adjusting his latest "fortitude formula" and discovers the truth of what became of her comrade Nayuki. Violently writhing tentacles coil around her trembling body, sinking inside as her ahegao expression twists in helpless pleasure, while another victim petrifies into a gleaming statue for the artist's "masterpiece."