Sign Gene: The First Deaf Superheroes (2017)

Tom Clerc, a NYC deaf secret agent, who has lost his superpowers after a battle with his hero-turned-villain brother, is sent along with his colleague Ken Wong to Osaka, Japan, to investigate a spate of crimes that seem to have connections to gene mutations. Their investigation leads them to deaf criminal Tatsumi Fuwa, who has learned to harness the mutations to rise to power.