A bit before I stopped reading mangas, I started reading one that was very interesting. It was about a couple who separated after Second World War (not sure if it was really SWW, but it was sth similar - a war for sure). I think it was in Japan, but I'm not quite sure.
The drawing is not that attractive, it's more serious and not cute at all. Everytime I remember it I think about a title like "First Kiss" or "First Romance" but when I search for it it's not what I want.... I know it's harder that way :/