This episode is fully available and is part of the first season, which consists of 6 total episodes released between 2012 and 2018.

The anime was never intended to be a full adaptation of the entire visual novel. It was a two-part OVA that completed its intended arc. While the visual novel offers more story and different endings for those who can play it, the animated version of the original Kuroinu remains a closed book—a legendary two-part classic in the genre that stands complete as is.