
I remembered it was a manhwa. The art was gorgeous and kind of reminds me of "Extraversion of the Immortal"(?).
Anyway the MC is an angel with half wing cause his twin bro has the other wing. I think they are fallen Angel tryna get back for some reasons. The FMC who is literally a pos killed the MC' brother and cut his heart open to maintain her life I think because she had a pact with the twin that made her a popular actress but she dies in 3 years. So theC wants to avenge his bro but that demonic girlboss bitch shot him with a love gun

I also don't like rape and toxic relationship in BL. However, some of the BL you use as example aren't romance but psychological drama such as POTN and Killing staling(although it's not a BL). Psychological does not try to justify toxic relationship like so many BL does. They are just depicting toxic character and their development. They are NOT trying to justify their behavior like romance does. I do agree that a lot of romance are wrongly tag as psychological. In romance they depicts toxic characters and justify their behavior with "he was just misunderstood" or "they did this because they love her" or the typical "he had a tragic past", in psychological, the character's sad back story to explain their behavior not to justify them.
However, I do agree that popular psychological drama stories have shitty fans who try to justify the character's behaviors but it is generally not the intention of the author. Those fans are also consuming their media wrongly, they view psychological stories as romance. Killing Stalking is not a BL it's a psychological horror and the author hates it when people assume KS is a BL. POTN is not a romance, it's the story of a sociopath's obsession for a painter. Seungho is not a good person, he is not gonna do a 180 degree change for Nakyum and they aren't gonna end up in a fluffy relationship at the end.
Anyway. I'll take GL recommendation

POTN isn't a romance but clearly has the romance tag hmmm okay lol
But no I do agree with you. Suengho clearly isn't a good person, absolutely. Everything you said about KS is true, yes. But with POTN it's pretty obvious that most people want to see the two mc to end up together soooo idk what this 'good ending' is gonna look like

Have a fun read :3
http://www.mangago.zone/read-manga/handsome_girl_and_sheltered_girl/
http://www.mangago.zone/read-manga/she_is_still_cute_today/
http://www.mangago.zone/read-manga/the_end_of_the_world_and_a_witch_s_love/
http://www.mangago.zone/read-manga/getting_to_know_grace/
http://www.mangago.zone/read-manga/chun_and_alice/
http://www.mangago.zone/read-manga/nettaigyo_wa_yuki_ni_kogareru/
http://www.mangago.zone/read-manga/girl_in_a_cage/?pobb
http://www.mangago.zone/read-manga/living_will/
http://www.mangago.zone/read-manga/laika_pavlov_pochihachikou/
http://www.mangago.zone/read-manga/prism_higashiyama_shou/

Does anyone know any other story like "At the end of the road" with the same "switch body" concept or just a story that is just as intense ヾ(❀╹◡╹)ノ~

Not a body switching one but I really recommend it, u might have read it http://www.mangago.zone/read-manga/never_understand/
I just finished Ghost Gate and although the story was confusing as dick, it birthed in me an interest in horror BL or even GL. Not Yandere type, actual ghosts and spirit type of horror
Dreadful night
The black mirror
https://www.mangago.zone/read-manga/midnight_tag/
Thanks y'all for the recs
https://www.mangago.zone/read-manga/hikaru_ga_shinda_natsu/
https://www.mangago.zone/read-manga/a_mail_from_my_dead_lover/
https://www.mangago.zone/read-manga/dead_man_switch/
Enjoy