Responses
A Silent Voice
Three Days of Happiness
To You, The Immortal
Totsukuni no Shoujo
(Sorry I don't know more, but if you're interested in anime recs, I have plenty of good tearjerkers)
This is a must read T_T https://www.mangago.zone/read-manga/watashitachi_no_shiawase_na_jikan/
Could someone recommend me more of those sad mangas that could make you cry