A manga adaptation of the original game was created by Usami Wataru .
A manga adaptation of the original game was serialized in Dengeki Daioh from 2008 to 2011 , and later published in three collected volumes by Kadokawa Corporation .
A manga adaptation of the original game was created by Usami Wataru and serialized in Dengeki Daioh from 2008 to 2011 , and later published in three collected volumes by Kadokawa Corporation .