Nathanael Karmitz’s Paris-based outfit MK2 has acquired international sales rights to Naomi Kawase’s “Still the Water.”

A Cannes Film Festival vet who served on this year’s Steven Spielberg’s jury, Kawase won the Camera d’Or in 1997 with “Suzaku” and the Grand Prix with “The Mourning Forest” in 2007. Kawase’s last feature, “Hanezu,” competed at Cannes in 2011.

France’s Commes des Cinemas is producing with Japan’s Kumie Inc.. Arte France Cinema and Eddie Saeta are co-producing.

Taking place during the full-moon night of traditional dances in August and set on the Japanese island of Amami-Oshima, the drama centers on a 14-year-old boy who finds a dead body floating in the sea. The young man enlists the help of his girlfriend to solve the mystery. The pair “will learn to become adults by experiencing the interwoven cycles of life, death and love,” said MK2.

Lensing is set to kick off in the fall.

A sales and exhibition company, MK2 has Xavier Dolan’s psychological thriller “Tom at the Farm” and Bruce Labruce’s offbeat romantic tale “Gerontophilia,” which both played at Venice and Toronto.