Celine Sciamma could be a French Lisa Loeb, her straight hair and glasses offsets keen, intelligent eyes.

Only 27 years old, she caused a sensation in Cannes this year with her debut film "Naissance des pieuvres," a coming-of-age tale that combines synchronized swimming and hints of lesbian desire.

Sciamma, who came to Tokyo with lead actress Adele Haenel to promote the film, says that she chose to set the story around an indoor pool because she wanted "a closed, confined, humid kind of place. Because that's what adolescence is like, isn't it?"