Frontwing opened the Steam page for their upcoming visual novel The Melody of Grisaia set to release by the end of 2016.

The game was originally released in Japan as a bonus item for those who purchased, From The Future Undying. This is the last and final side story for the developers' Grisaia series, with the mainline entries be published in the west by Sekai Project.

The developer explains the premise further:

This episode takes place just after Kusakabe Asako officially names Kazami Yuuji her successor as number 9029, and details his globe-hopping exploits thereafter.

Yet more secret passages of The Labyrinth of Grisaia are revealed within...

You can check out the announcement trailer and some screenshots below: