The mc probably stole Soobin's luck. The 1st chapter literally starts with mc thinking to himself how lucky he is despite not having any special talents. Only having a decent face and a rich family makes his life so smooth-sailing! That grandma most probably is a shaman and she probably knew what mc's future was going to be like so she must have made a luck stealing ring that stole soobin's luck (since he was the only kid around the same age as mc). Mc probably wasn't as lucky before meeting soobin and that's why his family didn't let him leave his house to keep him away from harm. If you know you know, mc's only friend in childhood was soobin and after meeting him, mc started to steal his luck (even though he didn't know anything about it). Soobin probably had a suspicion regarding this matter because his life suddenly turned to hell after meeting mc and maybe that's the reason why Soobin yelled "My life turned to hell after meeting you". After done stealing his luck their family moved away from that poor neighborhood (which makes you wonder, if they're so rich then why would they even come live here? Probably because for them poor person is more easy to use...) and after transmigrating, his ring was already used so maybe that's the reason why in this life, he's not as lucky as his previous life (that is the reason why he keeps on saying "This never happened to me before, I was always so lucky") Also like the previous commentor mentioned, Soobin's sister is most probably the one that's the murderer. Her memory must've been distorted because of ptsd and that's why she thinks her brother is the murderer. If you look at her eyes well enough you will see that her eyes already seems out of place and she looks mentally ill and delusional. Soobin knows his sister very well and maybe that's why he advices the mc to not be in touch with her ...
The mc probably stole Soobin's luck. The 1st chapter literally starts with mc thinking to himself how lucky he is despite not having any special talents. Only having a decent face and a rich family makes his life so smooth-sailing! That grandma most probably is a shaman and she probably knew what mc's future was going to be like so she must have made a luck stealing ring that stole soobin's luck (since he was the only kid around the same age as mc). Mc probably wasn't as lucky before meeting soobin and that's why his family didn't let him leave his house to keep him away from harm. If you know you know, mc's only friend in childhood was soobin and after meeting him, mc started to steal his luck (even though he didn't know anything about it). Soobin probably had a suspicion regarding this matter because his life suddenly turned to hell after meeting mc and maybe that's the reason why Soobin yelled "My life turned to hell after meeting you".
After done stealing his luck their family moved away from that poor neighborhood (which makes you wonder, if they're so rich then why would they even come live here? Probably because for them poor person is more easy to use...) and after transmigrating, his ring was already used so maybe that's the reason why in this life, he's not as lucky as his previous life (that is the reason why he keeps on saying "This never happened to me before, I was always so lucky")
Also like the previous commentor mentioned, Soobin's sister is most probably the one that's the murderer. Her memory must've been distorted because of ptsd and that's why she thinks her brother is the murderer. If you look at her eyes well enough you will see that her eyes already seems out of place and she looks mentally ill and delusional. Soobin knows his sister very well and maybe that's why he advices the mc to not be in touch with her
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