|Double Seven Series 1|
|Release Date||November Issue, 2012|
|On Cover||Shiba Miyuki, Shiba Tatsuya, Sakurai Minami|
Double Seven Series 2
Double Seven Series 1 is on Dengeki MAGAZINE Volume 28.
Double Seven is a part of second year refers to the short segments written by Satou Tsutomu released in Dengeki Bunko MAGAZINE in a timeline when Tatsuya and Miyuki reached their second year in First High School.