Omen is a cross-media project combining web game, installation & projection, animation and moving image. It discusses about cyber identity and mirror effect developed in this context with biological metaphor.The persona of a fictional internet influencer / streamer is deisgned for a real fish, and built a real-time projection control installation based on a fish tank as the background of its fake live streaming performance. The fluidity of its cyber identity and the subtle relationship between changes in its life state and its “audiences” ’ public opinion are implied with abstract visual language. Full information at https://weiranyao.cargo.site/Omen