Due out this spring in Japan.

Square Enix has announced Last Idea, a new “treasure hunting RPG” for iOS and Android due out this spring in Japan.

Here is an overview of the game, via Square Enix:

Staff Main Character Design: Kaou

Music: Shota Kageyama

Animation Production: Studio A-CAT

Planning and Production: Square Enix Cast Manaka Iwami, Aya Suzaki, Kento Fujinuma, Ai Kakuma, Minami Takahashi, Keiji Fujiwara, Minami Takayama, Yuuko Minaguchi, Hikaru Midorikawa, Rie Kugimiya, Jun Fukuyama, Yumi Sudou, Sakura Nakamura, Mitsuki Nakae, Satoru Murakawa, Tasuku Kida, and more. Story The protagonist, a novice treasure hunter, heads by airship to the abandoned “Silent Castle” located on an isolated island in order to confirm signs of treasure sensed by diviner friend Rah Mel. Upon arriving, the earth suddenly begins to shake and darkness spouts from the ground, instantly covering the sky, and hordes of monsters begin to attack Silent Castle. The party tried to give up on the treasure and turn back, but upon seeing a girl about to be attacked by monsters on the castle’s balcony, they run to her rescue…

Watch a teaser trailer below. Visit the teaser website here.