The official website responsible for the film Gyokou no Nikuko-san released a music video featuring the film's ending theme song called "Taketen", the song is presented along with scenes from the film.
The band GReeeeN is in charge of the music.
Additionally, the site also revealed a poster for the film:
Gyokou no Nikuko-san will then premiere on June 11th .
Source: ANN
