This is the fourth volume of the Strike the Blood manga adaptation.
- Chapter 15: From the Warlord's Empire
- Chapter 16: Nalakuvera
- Chapter 17: A Maiden's Heart
- Chapter 18: Assault
- Chapter 19: The First Words
At the invitation of Dimitrie Vatler, emissary of the First Primogenitor, Kojou and Yukina attend a yacht party. Dimitrie's guardian has it in for Kojou, and as though that's not bad enough, the festivities turn serious when Kojou and Yukina discover a terrorist plot that threatens Itogami Island itself...