Reina Akatsuki (暁 零菜, Akatsuki Reina) is Yukina and Kojou's daughter who was sent 20 years back to the past by Moegi, to chase a manmade magical beast despite the similar appearance, she is very different from her mother. When she first appears she's shown to be rather ditzy, mainly for walking into a door because she thought it was automated, and making various comments about the younger versions of people she knows. Besides this she is mostly friendly and not overly serious. She like her father have an afinity for nosebleeds and this so happens when they're either sexually aroused, or when getting excited gazing upon beautiful people! However Reina case is different. When Reina saw her step-mother Asagi in her youth, became overwhelmed by her beauty that when she started describing her physical attributes that, all the thoughts that accumulated inside her became too much and it lead her to bleed from the nose.

Strike the Blood IV
Fourth season of Strike the Blood.

Strike the Blood
The Fourth Primogenitor—That's the world's strongest vampire that should only exist in legends. Accompanied by twelve Kenjuu and spreading calamity, this phantom vampire appeared in Japan. For the observation and obliteration of this Fourth Primogenitor, the government and Lion King decided to dispatch an attack mage known as a Sword Shaman. However, for some reason, the one chosen for the observation was a apprentice Sword Shaman girl, Himegari Yukina. Wielding the strongest anti-primogenitor spirit spear, Yukina arrived at Demon District, Itogami City. What is the true identity of the Fourth Primogenitor, Akatsuki Kojou, she encountered over there!?

Strike the Blood II
The second season of Strike the Blood which adapts three arcs from the 9th, 11th, and 12th light novel volumes.

Strike the Blood III
It was announced at a Dengeki Game Festival stage event that the Strike the Blood light novel series will get a third OVA release. It will cover until the end of Seisen-hen.