Toshiko Ezaki's "Smile" song lyrics in English are:
"When the day is over, I want to make you smile
No matter what happens, I will always be by your side
Just like the sunshine, I will warm your heart
Through the tears and pain, I will be your guardian angel
So smile, smile, smile
Let the happiness fill your heart
So smile, smile, smile
You will always have my love"
Note: This translation may not be exact in all details, but it conveys the main meaning of the song.