Rozen Maiden (2013) EP13 - Do Not Forget

Jun who didn't wind the key returns to his life in his original world as though nothing ever happened, but little clues remain to reassure him that his time with Shinku and her sisters did in fact happen. A few choice things in life are beginning to fall into place for him, and he finds he is no longer in a rut as he now has some interesting choices to make. Meanwhile, his younger self who wound the key prepares to face his first day of middle school in a long time, but waiting there for him is a completely unexpected threat.