It is a bit ambiguous in this case.
We found unfinished non-core content:
Strike the Blood: Append (Side Story)
MangaUpdates contains information about the anime adaptation and indicates that it is complete.
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Anime - Base
Release date: October 04, 2013
Anime - Sequel
Release date: November 23, 2016
Anime - Sequel
Release date: December 19, 2018
Anime - Sequel
Release date: April 08, 2020
Anime - Sequel
Release date: March 30, 2022
Kojou Akatsuki, a regular high schooler, unexpectedly gains incredible vampire powers, becoming the legendary Fourth Primogenitor.
This sudden transformation draws the attention of the Lion King Organization, who dispatch Yukina Himeragi to observe him.
Yukina's mission is to eliminate Kojou if he becomes a danger.
Forced together, Kojou and Yukina form an uneasy partnership.
They must learn to navigate Kojou's newfound abilities while protecting their city from various threats.