Kasum's unique style is rooted in the emotions of his characters and authentic African narratives, often bridging the gap between generations and cultures. His work spans various formats, including feature films, TV series, documentaries, and music videos. He is known for using a mix of English, Pidgin English, and African dialects in his films, advocating for cultural preservation. His career began as a motion graphics designer before moving into directing and producing. His first feature film was the 2017 live-action animation movie Dognapped, but he gained significant recognition with his 2018 film Oga Bolaji.