When he was a child, he and she made a promise to each other because of a song. He wanted her to be his angel, belonging only to him, and he, who was like sunshine, would always stay by her side... When he grew up, he became a super star, and he, who was like sunshine, still stayed by her side silently. She gradually entered the entertainment industry, and the three of them were once again pulled together by fate... What kind of exciting plot will appear... Please pay attention to Xiyuan's new work - Exclusive Angel...