Only One/Anh Duy

Background
"Only One" is Anh Duy's second original VOCALOID and UTAU song. It is about an innocent, cute, clumsy and silly high school girl who develops a crush on a nice boy. She quickly befriends him. On Valentine's Day, she asks to hang out with him and they do so. The girl finally confesses her love to him. The boy and the girl then ended up as a couple.