Dengeki Comic Gao!
Hikkatsu! Strike a Blow to Vivify, known simply as in Japan, is a Japanese "shōnen" science fiction comedy manga series written and illustrated by Yu Yagami. It was published in Japan by MediaWorks in the monthly manga magazine "Dengeki Comic Gao!" from May 27, 2005 to May 27, 2006 and collected in three bound volumes. It was licensed in North America by Go! Comi, with all three volumes released.