
Manhwa's with no Happy ending. Short but The story and plot is great and reasonable.

This one was so good and made me cry A LOT, there’s mentions of self harming, depression, ecc.. so if u don’t feel comfortable with it don’t read it.
https://www.mangago.zone/read-manga/incidentally_living_together/

A manhwa that has siblings love... NO, NOT INCEST. Like a normal one like.... Not a brother who is obsessed with her sister that it is mistaken for love. And that type of sister that goes 'I won't eat Dinner!' Type of shit. (I don't hate them it's just I need somethung more).
I know we have different ways to love someone but!! I'm asking for like a comedy. Likeee they somewhat hate each other or find each other annoying, but they still Care and love each other :3

https://www.mangago.zone/read-manga/two_size_two_small/ Try this one.

https://www.mangago.zone/read-manga/i_became_the_youngest_sister_in_law_of_the_male_leads_in_a_tragic_reverse_harem/
this one has sisterly love (no brothers) but it's rlly cute, im waiting for officials tho. the mc actually is a child and not a 30 y/o in a kid's body lol (she is reborn but only has vague memories till 15 so she basically has a child's mentality only. ofc no romance yet)
https://www.mangago.zone/read-manga/i_raised_cinderella_preciously/
this is more focused on mother-daughter relationship but tons of sisterly love too :) fl is one the of the best manhwa moms lol

Idk I been tryna find this manhwa for a quite while now... But the only scene I remember is the female lead jumps off a tower... Okay back story of it The females lead is the villainess in the original (novel/manhwa cuz idk) and also I think she committed suicide before she reincarnated, and now she's killing herself (in the villainess body) yuh.... Idk...

Manhwa that the MC is a TEACHER/PROFESSOR/ETC (OTHER NAMES FOR TEACHING FIGHTING) or TEACHES, her/his students or his Idk (I forgot) underling? idk man. Yeah. NO ROMANCE BETWEEN THE MC AND THE PERSON SHE/HE TEACHES. cuz no This week is no romance week :).... (Ps, I have read Academy undercover professor)

If manga is ok, then here, I have a list just for this! I hope it helps and you enjoy~
https://www.mangago.zone/home/mangalist/2265824/
Manhwa's with NO happy endings.. Like the MC died or the two of the main couple didn't get together, smth like that. Like A sad ending. I want it short but had a great plot
Example... Haruka tooki le
care for some sad gl oneshot? ;) https://www.mangago.zone/read-manga/only_need_to_love_once/
'Timeless melody'
'Efforts never betray'
This witch of mine !
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Spoilers for others
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This witch of mine has a happy end tho, the main characters at the start of the story find each other again and get together
Dunno if it fits the bill but here ya go
https://www.mangago.zone/read-manga/bound_to_be_fools/
https://www.mangago.zone/read-manga/sleeping_dead/ (recommend)
https://www.mangago.zone/read-manga/ouroboros/
10 years i loved you the most