The song "Dr. Angel" by Hiromi Rainbow is about finding the ideal partner in love. The lyrics talk about how when you're feeling down, you can call on "Dr. Angel" for help. The song describes this ideal partner as someone who can heal your emotional wounds and solve any difficult situation. "Dr. Angel" is portrayed as someone who is always there for you, like a guardian angel. The song emphasizes the importance of having a supportive and caring partner in a relationship. The lyrics also express the idea that true love and a fulfilling relationship can bring healing and comfort, like the help of a doctor. Overall, the song "Dr. Angel" conveys the message that finding the right partner can bring happiness and healing in life, just like an angelic figure.