"Good Night" is a song by Japanese singer-songwriter Utada Hikaru. It was released as a B-side track on her single "Hikari" in 2002. The song is a melancholic and reflective piece that explores themes of nostalgia, separation, and the fear of being forgotten. In the lyrics, Utada expresses a sense of joy and nostalgia as she opens an album after a long time. However, she also acknowledges the endless mysteries and puzzles of the world that never seem to resolve. She then says goodbye repeatedly, expressing her dislike for farewells and her desire to avoid them. Utada contrasts her own vulnerability as she closes her eyes with the dream world where no one is invited, emphasizing a feeling of loneliness and isolation. She states that she is not a mere memory and despises goodbyes. The final lines imply a plea: "Let me tell you about myself recently." Utada wants someone to understand and empathize with her current state, to acknowledge her in the present moment. The song encapsulates Utada Hikaru's introspective and introspective songwriting style, showcasing her ability to evoke complex emotions and deliver heartfelt messages.