尖端出版
A manga adaptation titled "Gun Princess ~Sincerely Night~" was written by Takadono and illustrated by Kei Ichimonji. It was serialized in Kodansha's "Monthly Shōnen Sirius" magazine, and later released in four "tankōbon" from November 22, 2006 to September 22, 2008. Sharp Point Press has licensed the manga for a Chinese-language release in Taiwan.