Mood: The mood of the video appears to be heartwarming and nostalgic, evoking a sense of childhood innocence and camaraderie. The theme seems to revolve around school life, friendship, and the simple joys of sharing a meal with peers.

Environment: The setting of the video is likely a school cafeteria or classroom, given the uniforms worn by the children. The background is a plain green wall, which is often found in educational institutions. The atmosphere seems casual and relaxed, with the children engaged in eating and socializing.