Titled The Print, the short made the rounds on the Internet and eventually attracted the attention of the indie-focused Pure 16 Film Festival. When the organizers invited Ko to screen an extended 30-minute version of The Print, he became the youngest director ever to participate in the festival.
這部名為《鬼印》的短片一鳴驚人，不但在網路上廣為流傳，並被鼓勵獨立製片的「台灣純 16 影展」相中，邀請他將《鬼印》延長為 30 多分鐘版參展，成為這個影展有史以來最年輕的入選導演。