Board Thread:Questions and Answers/@comment-46.155.74.64-20180104213851/@comment-53539-20180105105430

I think you need to rattle your brain more and give them a bit more, the more detail you can recall the better.

裏表ラバーズ (Ura-omote Lovers) is my best shot, but it doesn't start with a ring tone and I doubt its the one.