Mood: The mood of the video appears to be romantic and intimate, with a sense of passion and desire. The theme seems to revolve around love and relationships, possibly with a darker or more dramatic tone given the title 'Hate Story IV'. The emotion conveyed is one of longing and closeness, with the couple sharing a tender moment.

Environment: The setting appears to be a serene and peaceful outdoor location, possibly a beach or a lakefront, with a wooden deck or pier in the background. The warm and soft lighting suggests a sunset or sunrise setting, adding to the romantic ambiance.