Injuries? Yeah imma ignore that bit because that’ll shorten my recommendation list
I’ll start with the ones where the Mc DEFINITELY pushes themselves to the limit
https://www.mangago.me/read-manga/omniscient_reader_s_viewpoint/ (Action, Yaoi if you squint) The main character, Kim Dokja, is constantly pushing himself to the limit in order to get ‘the ending he wants to see’. This man even dies a few times too. He’s very well written as well, and I love the art in this story. Oh, and he gets ACTUAL INJURIES.
https://www.mangago.me/read-manga/alphega/ (Yaoi, Smut) The Mc doesn’t get injured in this one, at least at this point in the story. He is a bit of a workaholic and barely gets any rest, so he does push himself to his limit. This also isn’t a one-time thing, as he seems to consistently push himself.
https://www.mangago.me/read-manga/blood_poker/ (Yaoi, Smut) No injuries being hidden, but the Mc (guide) frequently pushes himself with his guiding and often ends up hurt. He does this out of a desperation to be useful, which I find very interesting.
https://www.mangago.me/read-manga/turning/ (Yaoi, Smut, SLOWWWburn) The Mc ACTUALLY HIDES HIS INJURY! Without spoiling too much, Mc got an injury on his hand that gets worse when he uses too much power, but he pushes himself despite that.
https://www.mangago.me/read-manga/sss_class_suicide_hunter/ (Action) The main character consistently pushes himself, often to the point of death. I love seeing the psychology in this story, and it frequently made me cry. He ACTUALLY GETS INJURED
https://www.mangago.me/read-manga/guiding_hazard/ (Yaoi, Smut) Totally, the Mc is a reckless POS sometimes (he isn’t a POS as in like… an asshole though). The psychology in this one is pretty interesting too. He also GETS ACTUAL INJURIES.
The rest of these stories are technicalities. The Mc TECHNICALLY gets hurt/hides an injury. I’m too tired to describe anything.
https://www.mangago.me/read-manga/i_m_not_your_guide_to_destiny/
https://www.mangago.me/read-manga/biscuit_1/
Peak Yaoi btw
https://www.mangago.me/read-manga/see_you_my_king/ Technically ml hides the injury, but I THINK the Mc has pushed himself too far b4
https://www.mangago.me/read-manga/a_gloomy_delusion/
https://www.mangago.me/read-manga/foam_of_the_sea/ Female Mc btw
https://www.mangago.me/read-manga/homeless/

anything where the mc (preferably male) hides their injuries or keeps pushing themselves despite it?