most soul crushing read?

I did read some more but i forgot to tag them and im bad qith titles so only there 3 for now ... All are short but painful so can continue crying without ceasing in one go... All the best!
https://www.mangago.zone/read-manga/haruka_tooki_ie/
https://www.mangago.zone/read-manga/nee_nee_nene_san/
https://www.mangago.zone/read-manga/my_wife_whom_i_loved_dearly/

The horizon
https://www.mangago.zone/read-manga/the_horizon/

Twittering birds never fly
Blue flag
Tokyo ghoul

"10 years I loved you the most" URg even thinking about it hurts me. I hate yet like aspects of this story. ahhh