Responses
Considering the authors called this a redemption arc, I don't believe Heeryang is going to be the one to hurt Yeonjo's leg. I may be completely wrong here, but I also don't think Yeonjo is going to help the light-haired dude. I think he may actually tell on him to Heeryang. But maybe I'm being too optimistic. I guess we'll see.

The prologue shows the uke with short hair, walking with a stick and he looks sickly. The seme mentions him abusing alcohol and threatens to harm others since the uke disregards himself. We can guess where this story is going to end up. See must injury uke or something so he can no longer escapes. A cycle of abuse, rape and emotional torture.
I’m assuming the seme finds him quickly (typical story line). Breaks or sprains one of his legs then holds the man who helped him captive as means to threaten the uke. Because he knows the uke is willing to simply kill himself, in order to stop that he needs to use someone the uke cares about. Honestly I feel like I’ve seen this storyline so many times it’s repetitive. I really try to enjoy this story because of drama but if it’s getting this predictable…idk. I also noticed the uke gets approached by another male with a plan to kill the seme. But honestly is it not similar to what the uke did the first time? Suddenly treating the seme affectionately to lower his guard and then backstabbing him. The uke failed to do so the first time, so what is making the second time different? After everything the seme has done the uke, why would the seme believe he no longer resents him and wants to willingly be his fuckin sex toy.