The first of four Darker than Black OVAs is out and subbed.
These OVAs take place between the first season of Darker than Black and the second season, Darker than Black: Ryuusei no Gemini. The focus of course is on Hei and Yin, and it will hopefully provide some much desired details on what happened to Yin before the start of Ryuusei no Gemini.
As always, Bones is continuing to achieve excellent animation work on their projects with this not being an exception. The first episode focuses on the relationship between Hei and Yin while placing fast-paced action scenes at the beginning and the end. Be ready for the first few minutes, it’s epic.