Mood: The mood of the video appears to be light-hearted and playful, with a hint of youthful energy. The theme seems to revolve around a carefree and possibly comedic storyline, given the title 'Galti Se Mistake' which translates to 'Mistake by Mistake'. The overall emotion evoked is one of fun and entertainment.

Environment: The setting of the video seems to be outdoors, possibly in a school or college environment, given the protagonist's attire, which includes a school uniform with a sweater. The background is blurred but suggests a natural setting with trees and a sunny sky, indicating a bright and possibly vibrant atmosphere.