Detective Kun-Kun is a puppet detective dog from a children's T.V. show. Shinku really likes him and watches his show as much as possible.

Sakurada Jun spends his days online, ordering whatever he takes a liking to, only to return it before the payment is due. Due to psychological trauma from school, Jun generally keeps contact with people as little as possible. One day he finds instructions online that tell him to put his order into his desk drawer. Rubbing it off as a joke, Jun mindlessly does so only to find that his order instantly disappears from his drawer. A package suddenly appears, containing a beautiful antique doll. When wound up, this doll comes to life. Sadly for Jun, this doll Shinku views Jun as an equivalent for a servant. Despite the constant demands Jun now receives from Shinku, she slowly helps him overcome his fears of human contact as well as protect him from the deadly battles that come into his life due to her appearance.

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In October 2019, he revealed that he has been diagnosed with amyotrophic lateral sclerosis (ALS). In February 2023, he posted on his blog an update to his condition, in which he is no longer able to move his arms or legs and was given a tracheotomy, losing his ability to speak (announcing his retirement from voice acting) but can still communicate with digital voice software.

[Website](https://www.keithsilverstein.com/) | [Twitter](https://twitter.com/SilverTalkie) | [Instagram](https://www.instagram.com/keithsilverstein/) | [Facebook](https://www.facebook.com/keithsilversteinvo) | [TikTok](https://www.tiktok.com/@keithsilversteinva)

Keith David Silverstein is an American voice actor, best known for his roles as Johan Liebert in Monster, Vector the Crocodile in the Sonic the Hedgehog video games, Robert E.O. Speedwagon in JoJo's Bizarre Adventure, Hisoka in the 2011 version of Hunter × Hunter, Oogai Mori in Bungo Stray Dogs. He is also known from several non-anime roles, including Gabriel Agreste a.k.a. Hawk Moth (Shadow Moth in later seasons) in Miraculous: Tales of Ladybug & Cat Noir, and Zhongli in Genshin Impact.

When Jun buys Shinku a brooch, she refuses to accept it at all costs. Souseiseki then confronts Jun with the reason for Shinku's behavior. The tragic story of Suigintou is told, with the revelation of why her hatred for Shinku could last throughout centuries. 

Note: This OVA has some spoilers of Rozen Maiden: Träumend, the second season of Rozen Maiden. These episodes fall chronologically between the 5th and 6th episodes of Rozen Maiden: Träumend, but might spoil later revelations.

As summer break arrives for the students, Jun Sakurada is busily studying on his own in the library, making up for time lost while he had confined himself to his home. Meanwhile, his Rozen Maiden doll, Shinku, has been having troubling dreams of late. The pain and sadness of defeating Suigintou was overwhelming, despite the inevitable battle they waged. After waking suddenly from a nightmare, she finds Suigintou's companion spirit wandering; upon giving chase, she discovers that the seventh Doll-- Barasuishou-- has awakened. She now realizes that Suigintou's fate may very well befall the other Dolls, for the appearance of the last Doll signals the beginning of the end of the Alice Games.
 
(Source: Anime News Network)

After a traumatic incident, Jun Sakurada refuses to interact with the outside world and return to school—he even shuts out his sister, his closest friend. Jun spends most of his time online buying spiritual items that are obvious rip-offs. One day he finds a website that curiously enough asks him to put his order in his desk drawer. Thinking it's a joke, Jun plays along. The following day a suitcase arrives containing a doll named Shinku... that comes to life before his very eyes! Welcome to the world of Rozen Maiden, where Jun must enter an all-new reality to protect and serve a living doll... 
 
(Source: Tokyopop)