MC in previous timelines was tortured and experimented on since childhood, no form of support or help from anyone, and was essentially set up to become a villain that aimed for world destruction with a hate for humanity. He was previously kinda of a sociopath compared to how he is now where he is compassionate, kind, naive and loves humanity. The main difference being that he has his uncle/adopted father and the ML.

I really liked how the MC responded to fully remembering the past memories because his convictions as a normal person neither distorted or changed and he was disgusted with who he was previously, and struggles to grapple with it. He essentially is dealing with the cult appraising him as a God which often leads to drama between him and them as he previously colluded and led them.

This obsession stems from the MC's past as a villain. Gunho is a regressor who tried multiple times to prevent the MC's goal of world destruction failing each time for a varying circumstance. In the current timeline Gunho and the MC live in he personally ensures that the MC won't become a villain, often by saving the MC's adoptive father that cares for him, and ensuring the MC is not alone as his villain trait leads to the misfortune of others close to him so he won't become a villain.

And Gunho succeeds but there is angst when MC discovers the ML's motivations for approaching him upon remembering. I understand both sides really ML wanted to prevent world destruction and the MC understands that but is evidently hurt at realising Gunho had a purpose and motivation for approaching him, and they did NOT get along when MC was a villain with them killing each other.

the romantic moments just aren't there or at least the MC ain't feeling it cos he has a crush on the ML, MC does not shy away from it really but is trying to get over it, ML is unaware and tries to set him up with women and later men.

The male lead could be 2 people technically Lee Joohyun (a character the ML tries to actually set him up with lol) who's an actually nice guy, his crush on the MC is obvious and quite cute. He does kind of get things rolling between the MC and ML.

Though I'd say the actual 2nd ML Kwon Soohyuk who is one that does tend to clash and attempts to make moves with to the MC though it doesn't really go anywhere, kind of f*ckboi vibes does blackmail the MC into navigating the cult sect as they are constantly targeting and kidnapping him.

MC values are challenged with his desire to take revenge and kill from cult members placing his adoptive father in jeopardy, meeting individuals that were involved in his childhood trauma from experimentation and torture, and just bad people doing awful things but his current values allows him to persevere and avoid that line of becoming the villain and it's nice to see, he acknowledges who he was in the past with disgrace but also acknowledges that his current values won't allow him to revert back to a villain and its not always from determination or confidence but stemming from fear and anxiety due to having a simple upbringing as a normal individual then a hunter.

the story is about MC pov where ML is a regressor, but MC kept dreaming about those previous timeline, where he became the villain and ML always kill him or vice versa.. and MC past in those timeline... 😩😩😭😭😭 my poor baby... 😭😭😭 how the world wronged him 😭😭😭

when MC finally know that ML is a regressor and he got all his memories back... 🥲🥲 and MC become afraid of ML bcs in previous timeline ML used to tortured him till death 🥹🥹🥹

ML is obsessive and overprotective to MC (he put location tracker on MC and messaged him every minutes asking where he is etc💀), but I kinda get him... MC is just too--- 😭😭 like if you take your eyes off him, suddenly there will dungeon break in his way to work, suddenly he got kidnapped, suddenly became a hostage, suddenly got involved in a cult, etc etc... it's kind of understandable...

But don't worry MC is strong guys!!! Strong MC wowww!!😱 He's a S-class too!! 🤩🤩 He hide his power, but if it comes to be really dangerous, he doesn't hesitate to use it (secretly, of course)

ML likes to nagging a lot 💀and before he realizing his feelings, it seems like he looks at MC as his own kid lmao... like.. the kind of kid that often got to trouble 💀 and like... I can imagine this scene where he prepare food for MC with the 'you grow up well' ahh kind of smile or 'I raised you well' ahh kind of smile 😭😭😭 like, , his motherly vibes 😭😭🤌🤌

About ML in previous timeline... I mean I kinda get him 💀 he just want to prevent world destruction... 💀💀 and I get why MC felt betrayed too💀

ML regressed back to one year earlier, and then two years earlier, three years, four years and so on. At some point, he got regressed when MC is 12 y.o., where none of mc's tragedies happened yet... he took advantage of that to get close to MC.... which is.. current timeline

Although at first his intentions were to prevent world destruction..., as the time goes on, he got to loves MC and really wish for his happiness🥹🥹🥹