Rock band Base Ball Bear has announced that they will be releasing a new mini-album (currently untitled) on July 11th!

The new mini-album will contain the band's new song, "Hatsukoi", which was written as the theme song for the animated film, 'Toshokan Senso: Kakumei no Tsubasa'. The title track and other details will be revealed at a later date.

Additionally, it was revealed that member Koide Yusuke (Vo, G) will joining the voice cast of 'Toshokan Senso: Kakumei no Tsubasa'. This movie is set to open in theaters on June 16th.

Prior to the film's release, the official soundtrack will go on sale on June 13th. This CD will include the theatrical trailer version of "Hatsukoi".

Stay tuned for more details on Base Ball Bear's upcoming mini-album!

Source: natalie