Matsuyama plays the lead character Yamada Taro and will appear with his hair shaved off and wearing underwear only. With regard to this, he commented that he took on this movie since there was none so far which literally stripped him naked and he felt that this was a "good way" for him to take off his clothes. As Matsuyama had prior experience in playing characters from mangas which were widely praised e.g. Hiroshi from "Do Konjo Gaeru" and L from "Death Note", he was seen as the best person to take on the character of Yamada Taro although he didn't look too close to the image in the manga.
In order to stay true to the essence of the original manga, the movie version tried to replicate the same atmosphere and jokes Due to the fact that there were many vulgar lines which cannot be shown on TV due to censorship issues, it had been said that this was a work which couldn't be adapted into a real-life movie.
Details about the rest of the cast and story will be made known on a later date.