HELP ??

Hey y'all
I've been trying to find a song that have been stuck in my head forever , its a Japanese song that is really really calm the singer is a female with a very tender voice she starts singing after 2 or 3 minutes . all I could remember from the lyrics in the beginning is the word "memories" this song helped me with my anxiety attack when im in public and I listened to it whenever I couldn't sleep idk why I thought it was a soundtrack from the anime "one week friends "but I'm not sure I didn't find anything it would be a amazing if anyone can help me find it ┗( T﹏T )┛