Schwarzesmarken: Sekiei no Bernhard

This is a prequel to Schwarzesmarken. Opening in the waning days of 1972, it recounts the tale of of the Bernhard siblings, Jürgen and Irisdina, and their friend, Beatrix Brehme as they cope with relationship issues, overbearing parents, and an alien invasion.
Note: Includes 3 extra chapters.