Seijirou Kanmuri

Seijirou Kanmuri (冠 成次郎, Kanmuri Seijirō) is a main character in the Over Drive Girl 1/6 manga and Over Drive Girls manga by Öyster, as well as the anime adaptation.

Haruto Bouida's friend. While at first glance he looks cool, he is as stubborn an otaku as Haruto. Whenever the two meet, it results in long and heated arguments about otaku-related topics. He begins to have an interest in the moving figures, and attempts to uncover their secrets. He is the president of the company Takasago-ya, that build the moving figurines.

Appearance
An normally looking man who usually wears official costume with a tie. He has a dark hair that usually cover almost his entire right side of the face and eye, and is little spiked on the side.

Personality
Like Haruto, he is self-proclaimed big otaku who also love 2D characters more than real girls. He loves talking about anime and would easily get heated up in an argument. Unlike Haruto, he usually always deny things he sees in the anime and don't easily accept them as possible, and because of that he has more negative view towards some of the series.

Plot
Seijirou was on a dinner with Haruto, where she was shocked to hear he didn't watch any anime from the season, but knocking him, he knew it wasn't because of a woman. As they discussed anime, their argument got heated and Seijirou trashed Nona's anime, which made Haruto angry and he tried to counter his logic with things he assume himself.

Seijirou was then walking home, when he spoke with a figurine in his pocket, revealing that he tried to make Haruto speak of Nona and that he had send a second one, Bellnoa.

Etymology

 * The name Seijirou means "become" (成) (sei), "next" (次) (ji) and "son" (郎) (rou).
 * Seijirou's surname Kanmuri means "crown, cap, diadem" (冠).