Need to cry

https://www.mangago.zone/read-manga/composing_spring_in_this_room_where_cherry_blossoms_bloom/
You will cry

+1 for the recommendation above, I cried like a lil bitch for too long

https://www.mangago.zone/read-manga/oniisama_e/
https://www.mangago.zone/read-manga/huijin_huayuan/
https://www.mangago.zone/read-manga/a_story_concerning_sweets/
https://www.mangago.zone/read-manga/yume_no_hashibashi/
https://www.mangago.zone/read-manga/kimi_to_tsuzuru_utakata/
https://www.mangago.zone/read-manga/this_love_that_won_t_reach/ (age gap, MC is in love with her sister-in-law; rushed and ambiguous ending)
https://www.mangago.zone/read-manga/kimi_ga_shinu_made_koi_wo_shitai/
https://www.mangago.zone/read-manga/haru_and_midori/
https://www.mangago.zone/read-manga/a_monster_wants_to_eat_me/
https://www.mangago.zone/read-manga/shiroi_heya_no_futari/ (one-shot)
https://www.mangago.zone/read-manga/avalon_bitter_anthology/ (one-shot anthology)
https://www.mangago.zone/read-manga/141108/ (one-shot)
https://www.mangago.zone/read-manga/aliens/ (one-shot)
https://www.mangago.zone/read-manga/a_bud_in_secret/ (one-shot)
https://www.mangago.zone/read-manga/the_story_of_a_person_who_grew_a_flower/ (short story; age gap, teacher x student relationship;hanahaki disease)

doomed yuri
https://www.mangago.zone/read-manga/kimi_to_tsuzuru_utakata/
https://www.mangago.zone/read-manga/living_will/
https://www.mangago.zone/read-manga/the_story_of_a_person_who_grew_a_flower/
https://www.mangago.zone/read-manga/stitch_you_together/
https://www.mangago.zone/read-manga/yume_no_hashibashi/
https://www.mangago.zone/read-manga/wasureenu_majo_no_monogatari/
https://www.mangago.zone/read-manga/my_broken_mariko/