Holy Knight of the Sunset (陽炎の聖騎士 Yōen no seikishi) is the sixteenth volume of the Strike the Blood light novel series.
Following the most intense battle of his life, a young man washes up on a strange shore. He is found by a swordswoman named Shizuka Kosugaya and informed that his name is Kojou Akatsuki, and that he is the fourth vampire primogenitor. In the days spent healing his mind and body, the two encounter a third person: A beautiful girl wielding a silver spear that calls Kojou..."Senpai."
- Chapter One: College Of Magic Arts Officer
- Chapter Two: Beasts Of The Dungeon
- Chapter Three: Another Reality
- Chapter Four: The Lost Demon-Sanctuary
- Chapter Five: Paladiness of Mirage
The volume was adapted into episodes 1-3 of Strike the Blood IV.