A foldout flier for Shogakukan's Gagaga Bunko imprint is announcing that an anime adaptation of Koroku Inumura's Toaru Hikūshi e no Koiuta (A Love Song to a Certain Airship Pilot) light novel series is in the works. More details will be announced next month.

The light novel series is set in the same world as Inumura's Toaru Hikūshi e no Tsuioku (Recollection of a Certain Airship Pilot/The Princess and the Pilot) novel, although it is set earlier with a different cast of characters. The story of love and aerial combat follows a former prince who lost everything to a revolution, and a girl who became the symbol for the revolution. The orphaned prince, now renamed Karueru, embarks on a one-way journey to discover the ends of the heavens. Aboard the levitating island of Isura, he meets a girl named Claire.

Inumura started the light novel series in 2009 and published the fifth and final volume in 2011. Haruyuki Morisawa, the artist for Tsuioku and the original character designer for Lagrange - The Flower of Rin-ne, also illustrated Koiuta and the other stories in Inumura's Toaru Hikūshi e project. Here is the rudimentarily animated promotional video for the Koiuta light novel series:

Tsuioku already inspired The Princess and the Pilot anime film (2011) from director Jun Shishido (The Story of Saiunkoku, Oku-sama wa Joshi Kōsei) and the studio Madhouse. NIS America just released the Blu-ray Disc for this film in North America this week.

[Via IEE802.11]