Fantasy; illusion; vision — an imagined or illusory world or image; something not real, like a dream or hallucination.
彼は成功の幻想を抱いて努力を怠った。
He neglected to work hard, harboring an illusion of guaranteed success.
映画は幻想的な映像で観客を魅了した。
The movie fascinated the audience with its fantastical visuals.
現実と幻想の境界が曖昧になる場面が多い小説だ。
It's a novel with many scenes where the boundary between reality and fantasy becomes blurred.