Guillotine Bride, Vol. 2 (manga)

Are some people better off dead? As a dragon girl with the power to destroy the world if she goes rogue, Rinne wrestles with that very question. She escaped her execution thanks to her soul wedding with Ryuunosuke, but forces lurking behind the scenes still threaten to ruin the peaceful life they've created. The Order is drawing near, and when Rinne and Ryuunosuke are mysteriously separated for her medical checkup, a horrifying plot is set in motion...

Volume 2 of the Guillotine Bride manga series by Daigo Murasaki.