Mood: The mood of this video appears to be youthful and playful, with a hint of edginess. The theme seems to revolve around music and possibly youthful rebellion or nonconformity, given the references to a 'virus' and bold, attention-grabbing graphics.

Environment: The setting seems to be urban, possibly a city street or a backdrop that resembles a graffiti-covered wall, suggesting a modern, vibrant, and perhaps slightly gritty environment. The overall aesthetic is colorful and energetic.