In 2009, he also starred in André Téchiné's "La Fille du RER" and in the television drama "Mes chères études", directed by Emmanuelle Bercot and dealing with a students' prostitution. In 2011, Demy appeared in Céline Sciamma's "Tomboy" and was cast as the lead in the romantic comedy "L'Art de séduire" by Guy Mazarguil. The same year, Demy wrote, directed and produced his first feature film, "Americano". Demy also stars in the film along with Salma Hayek and Geraldine Chaplin. Since 2012 Demy has continued to act in films such as "Les Conquerants" by Xabi Molia or "My little One" by Frédéric Choffat and Julie Gilbert. Demy has also been involoved in French television shows such as Eric ROchant's multi-awarded "Le Bureau des Légendes" for which he directed two episodes in season 1 and 3 episodes in season 3. Demy also had a part in the show as "Clément Migaud", Marie-Jeanne's lover  Since 2019 Demy stars in "Mytho" along with Marina Hands. The show was created by Anne Berest and Fabrice Gobert ("Les revenants") and was broadcast on Arte, whetre it gathered 2 million views, and available on Netflix for the international audience. The shooting of season 2 will be stating at the end of January 2020.