Having already overcome many trials Kojou and his friends believe they finally have a chance to relax. This is not to be, as they soon find themselves under attack from both an organization that wishes to eradicate any possibility of a lost god’s re-awakening as well as that same god’s misguided disciples.
A continuation of the Strike the Blood franchise which takes place after the Valkyria OVAs. It has the same mix of content as the TV series and you can’t really watch this without having seen that first.
More Information:
aniDB
Wikipedia