Responses
I agree with you so much on the brother. I love how the author didn't make him like his brother romantically that would turn into incest unlike other manhwas with the same plotline. It's an obsession not involving any romantic feelings or rape.
The brother is that one side character who silently had one of the best character arcs. He knew what he did wrong, put distance between themselves in the new life and when his brother expressed his desire to no longer interact with him, he quitely walked away. He understood how his actions resulted in the death of his own brother in the past and was properly remorseful for everything he did. I do feel bad for him because you can't really change your past and he has to carry the burden of his past life for the rest of his life. I want a new manhwa with him with a love interest.
Anyway, I feel like it would have been better if their sexual relationship started AFTER the reincarnation. This is just my opinion, but Taehyuk DID raise Hyoun as his guardian. It did feel weird when they started fucking in that timeline since Taehyuk fully raised him as his father figure. That one particular ick factor would have been removed if they first had sex after Taehyuk's reincarnation.