The howling wind blew across the fire koorime's face as he stood there, staring into the nightly purple sky. The Makai World remained silent as the moon settled above the horizon. 'Ever since the portal has been left opened, weak humans from Ningenkai continued coming into the Makai World.' His expression turned from calm to anger. 'Damn you Enki! I shouldn't be here babysitting every single human who falls through.'
Just then, a huge shadow hovered over Hiei, just a few inches away. Hiei didn't notice, and so continued on with his complaints. The shadow came closer and closer to Hiei, but once he found out, the shadow consumed him.

Later on, Hiei finally regained consciousness, slowly getting up; he soon found out he's not in the Makai World anymore. "Experiment M29 complete," someone said. "Where... am I?" "You're in Ningenkai," a voice said.
Hearing the voice made Hiei jump on his feet, but then he noticed something strange. "Do you feel anything different? Like your body has changed?" the voice asked. "I feel like I'm smaller than usual," Hiei replied. "Anything else?" "Enough with the questions. What have you done to me?" "See for yourself," the voice said, holding up a mirror.
Hiei looked at the mirror, and stood there; shocked (I can't think of a better word). Standing right in front of him is the same fire koorime, in the body of a mouse. The hair and eyes are the same, and his usual outfit: a white head band and his black clothes where still on, but shrunken to fit his new body. The only thing missing is his sword. "What have you done with it?" Hiei asked. "We're taking it away from you, temporarily," the voice said. "For safety reasons." "First, answer me this question: Why did you do this to me?" "To find a new life, in a new body, away from the Makai World," the voice said as the floor beneath Hiei started to disappear, leaving him to fall into the dark.