Kabushikigaisha Ankokujou no Last Boss-chan
株式会社暗黒城のラスボスちゃん
Five years have passed since adventurers defeated the former Last Boss. A new Last Boss has now been summoned to restore the Dark Castle. However, the summoned figure is a young girl. The monsters await her leadership in rebuilding their stronghold and resisting future attacks. An additional chapter is included.