What is this anime song? (Cross post from /r/AnimeOST, where I didn't get any answer)

I have a song in mind recently, I'm pretty sure it comes from a well known anime that is less than 10 years old, but I can't remember which one.

Do you know what it is? I made a quick music sheet here so that you can see a bit what it sounds like in my head, I unfortunately can't remember any more.



There are supposed to be Japanese lyrics on the music.
This melody seems to be "Aizome" by Mamiko Noto, the ending theme of Jigoku Shoujo. The melody seems to be playing the chorus of the song.