Sakurada Jun

An adult version of Jun who appears in the game "Rozen Maiden: Wechseln Sie Welt ab" (and also in the second series of the manga and its anime adaption Rozen Maiden Zurückspulen). Shinku refers to him as the "Jun-who-did-not-wind" or the "unwound-Jun".

In the parallel dimension, where he did not bond with the Rozen Maidens in the beginning of story, Jun is a college student who now wear contacts and dyed his hair. He also lives alone and works in a bookstore, although he is still afraid of facing people. Jun accidentally runs into Shinku when he is entrusted by his junior high counterpart to temporary take care of her, eventually becoming involved in the Alice Game as well.

Spoiler

After becoming the master of Souseiseki by accident, Jun helps the other Rozen Maidens and his younger self to retrieve Shinku's true body. After Shinku returns to her own dimension, he becomes more active in designs, helping out Saitou and begins making friends. When the young Jun is once again in trouble, Shinku decides to contact adult Jun once more and it is revealed that he also tried to create his own Rozen Maiden as well with no success, unaware that his prototype ended up becoming one of Kirakishou's alternate bodies. Having reunited with Shinku, Jun joins forces with her once more to save his middle school counterpart.