I really don't like dramatic animes or mangas,but sometimes I watch them/read them. I cried a lot in Bokura ga Ita,the anime is just so freaking sad and emotional. (If you already watched that anime,You should read the mangá because it shows what happened next)
http://www.mangago.me/read-manga/to_you_the_immortal/?vHpO
To you the immortal, I never cried this hard in my life, every chapter is sadness itself reply