After a funeral for Yuuko was held, Yuuko decided that she and Teiichi should had a proper date. They had a fun time until the sad reality hit them: Yuuko is a ghost ready to move on after she merged with her shadow and accepted her death. After a very emotional farewell that culminated with a kiss, Yuuko vanished. But, Yuuko reappeared, saying she was not ready to move on yet.
Episode 12 of Dusk Maiden of Amnesia was well crafted with the usual gorgeous animation and an emotional and powerful love scene, coupled with a sad but beautiful song. Up to this point, the conclusion was very good and would have enhanced the legacy of the series as a whole. But the creators had to screw the mature ending by making Yuuko return. If this was done to hint at a potential second season, it was unnecessary. This episode gets a 7 out of 10.