Ageha wo Ou Monotachi

Ageha Shiraishi sits on death row in Talsis Prison, condemned for the alleged murder of her four roommates. As her execution date looms, she pleads her innocence to her warden, Kyousuke, insisting she had no part in the crime. Although he investigates her claims, his research only seems to confirm her guilt. However, upon returning to her cell, Kyousuke discovers his superior officer bound and stripped. When he frees the captive, he realizes too late that he has been deceived—the person before him is not his superior, but Ageha herself. Possessing an extraordinary ability to flawlessly impersonate anyone down to their hair color, voice, and mannerisms, Ageha escapes, becoming the first fugitive in the history of Talsis Prison. She vanishes into the outside world with a singular vow: to track down the true killer and clear her name. Left with nothing but a single identifying mark—a swallowtail butterfly tattoo on her back—Kyousuke is thrust into a desperate pursuit. What follows is a tense chase as those involved race against time to unravel the mystery and grasp the hidden truth.