Shinemon Nitta, or "Shin" for short, is a support character in the Cardfight!! Vanguard (V Series Anime), as well the owner and manager of Card Capital. In the Shinemon arc, Shin becomes the protagonist of the story in his third year at high school, where he tries to save the future of Card Capital.
Shin is extremely knowledgeable when is comes to Vanguard, and is happy to assist others. He also acts as an overbearing guardian to his cousin Misaki Tokura. Despite no longer playing Vanguard, Shin's love for the game is evident.
As a teenager, he seems to be determined to save his family's business Card Capital. He's a hot-blooded fighter with a strong will that helps him overcome adversity. He tends to act rashly; acting before thinking. However, he does this out of love, as a way to help Misaki and her parents.
Shin wears a light blue dress shirt with a dark blue collar and cuffs. He wears dark blue jeans, and a blue Card Capital apron. His hair is green styled with dull spikes, and he wears black rimmed glasses over his dark grey eyes.
As a teenager, Shinemon wears Hitsue's high school uniform with a red tie. He also has a similar pair of glasses, although his hair is more spiky.
- In the original series, Shin was Misaki's uncle, and her father's brother. In the V series, Shin is Misaki's father's nephew, and her cousin. It is unknown why this was changed. Due to the original Shin having some discrepancies between his stated age and the timeline of events, and the Shin in the V series being visibly younger than the Shin in the original series (concerning both flashbacks pertaining to the death of Misaki's parents), it's possible that they made Shin from the V series younger to better fit the timeline of the death of Misaki's parents, Shin becoming Misaki's guardian, and Shin taking over Card Capital from his uncle.
- In the Cardfight!! Vanguard: Shinemon arc, Shin is stated to be Misaki's uncle instead, just like in the original series. it is unknown which version is correct.