Mood: The mood of the video appears to be dark and introspective, with a sense of longing or melancholy. The theme seems to revolve around love, possibly unrequited or misunderstood, as hinted by the title 'TACIT LOVE'. The overall emotion conveyed is one of somberness and intensity.

Environment: The setting of the video is not explicitly clear, but based on the dark background and the dramatic lighting, it could be inferred that the video is set in a dimly lit or nighttime environment. The focus is on the emotional interaction between the two characters rather than their physical surroundings.