Romance anime recommendation

HI guy im look for some good romance animes that i havent seen yet , yk the ones that are 12ep long but could be longer also , i seen most of the popular ones like Horimiya, SNAFU and similar things like that but if you got some Lovely or emotionaly heartbreaking animes that are a roller coaster pls let me know and if you dont mind leave a quick description about what the anime is.Hopefully i will find a true hiden gem of a Romace anime