月刊電撃コミックガオ!
"Stray Little Devil" was original serialized in "Dengeki Comic Gao!" and the thirty-two chapters were collected into five volumes published by MediaWorks. The series was Kotaro Mori's first original work, and it was at first envisioned as a short-term series, and then became a longer-term series. The English version was released by DrMaster.