Mood: The mood of the video appears to be casual and conversational, with a hint of playfulness. The theme seems to revolve around relationships or everyday life, given the setting and the characters' body language. The title 'Heartquake' suggests a strong emotional impact or a significant event that shakes one's heart.

Environment: The setting appears to be a casual, possibly outdoor or semi-outdoor location, given the presence of trees and a turquoise-colored vehicle in the background. The characters seem to be in a relaxed environment, possibly a travel setting or a social gathering. The presence of a vehicle with a window and trees in the background suggests a scenic or rural setting.