Strait Jacket (ストレイト・ジャケット, Sutoreito Jaketto?) is a light novel series by Ichirō Sakaki, with illustrations by Yō Fujishiro. A 3 episode OVA based on the light novel was produced by Feel. It currently has sold over half a million copies
The OVA series has been licensed for English-language translation and release in the United States and Canada by Manga Entertainment, and a film version was aired on Sci Fi as part of their Ani-Monday programming block on October 20, 2008.