Mikoto Enjou is a Japanese female character with dark blue hair and brown eyes. Her life was shattered by an attack from the demon Byakko, who captured her mother and younger sister Benio. Mikoto escaped solely due to her mother's sacrifice, forging in her a driving desire for revenge against Byakko.
She allies with Ryuusuke, wielder of Ruin Arms technology – specialized weapons effective against demonic Chimeras. Using a Ruin Arms chip provided by Ryuusuke, Mikoto transforms into the armored warrior "Soul Eater" to battle Byakko. Despite formidable willpower, she struggles to fully control the battle suit's abilities, placing her at a disadvantage against Byakko's overwhelming strength.
Defeated by Byakko, Mikoto is subjected to rape, mirroring her mother's fate and deepening her thirst for vengeance. Surviving the assault, she pledges unwavering focus on her quest for retribution.
Mikoto appears in related media where the Soul Eater persona is active, though not as the central character. Her story relentlessly centers on avenging her destroyed family. Details regarding the resolution of her character arc, the achievement of her revenge, or her ultimate fate remain unrevealed across all media.