The ''save the fmc from dying to rekindle our love'' plot was such an asspull. How do you see a rail crumbling from far away and the girl doesnt notice shit and decide that the only way to not have the girl die is running towards the lighthouse, running up a certain amount of stairs, running towards her to pull her back the exact moment before she falls to her death.
All this could've been prevented if he just shouted "STEP BACK!" but this author decided the only way for them to get back together is a life and death situation, and reading from comments that the author pulled a "sister raped me but i am still at fault" for them to divorce, it makes sense. This whole story made no sense from beginning to end. No wonder it had only 10 chapters.