“Under the Same Moon” is a nostalgic and emotional anime ending theme for Tsuki no Shita no Kyuuketsuki. The song follows Lilly as she quietly reflects on her former life, the loneliness she once experienced, and the unexpected second chance she has been given. With soft piano, delicate strings, dreamy melodies, and gentle female vocals, the song creates a bittersweet atmosphere that contrasts with the energetic opening theme. The moon serves as a symbol connecting Lilly’s past and present, reminding her that although she has changed, some memories will always remain with her. Rather than wishing to return to the past, Lilly slowly learns to accept her new identity and the people who have entered her life. The ending captures a peaceful moment of reflection beneath the moonlight, expressing nostalgia, loneliness, acceptance, and quiet hope for the future.