You deserve a like for this theory because some of your points do make sense. Like Rohee poisoning his own tea. I also thought Jeong Yeon never poisoned Rohee's tea. Though It's possible that Jeong yeon poisoned MC's cup out of jealousy but In chapter-31, Rohee says "By the way, Yisin, do you really think Jeong Yeon gave you that chrysanthemum tea?" which makes me sceptical! I think Rohee manipulated MC's memory by making MC think Jeong Yeon is the one that poured the poison in MC's tea and Rohee' tea...
Also we never saw Jeong yeon go to Rohee's room and poison Rohee's tea so It may as well be Rohee who poisoned his own tea to deceive the MC's memory.
I also think Rohee is pretending like he forgot his memories about the MC.
Interesting to know that I wasn't the only one wondering why Yoon is the least crazy/obsessed one in this story. Seongtae/Rohee/Jintae has more screentime than the ML (Yoon) in this story even though Yoon is the ML which felt weird and suspicious for me. Even though he's the ML, he still hasn't done anything batshit crazy (like Seongtae/Jintae) and he still has no supernatural power (like Jintae/Rohee). He's the most normal of them all.
I did notice Seongtae looking at Choi Ilhoi/priest with hatred before but later forgot about it so your words do make me curious about his relationship with the priest...It could simply be personal distaste or it could be more than that meets the eye...
i binged read this and i'm shocked. this will be a long comment (so that i also don't forget the plot later on lol)
all those pyschos are just clinically obsessed with MC. does he have some sort of uncontrolable charming power?? wtf.
first wdym that yoon guy is actually the least insane guy of them all ?? at least he's not currently involved with the cult and must actually want to destroy it since they almost sacrificed him.
then the little bro/son guy who has been working as the cult's reaper for years... even if he may not be aware that his dad is this psycho Jintae, growing up in this crazy environement with only MC as a normal unaware person sure fucked him up... but what is his agenda?? did he cause the car crash as a child? why does he seems to hate that priest at the orphanage? for now his character is kinda weirdly involved in everything but nothing at the same time..
jintae is such a piece of shit omg. but i'm so confused about him being hyeop. the multiple times when MC is sleeping and hyeop is blushing telling him ''thank you boss'' ''i'm sorry but i like you boss'' ''why am i hard, i must be out of my mind'' can not be jintae talking. he's a cold obsessive guy, why would he act like that??
it can't be that jintae was ''reincarnated'' into hyeop from birth, with his memories sealed, cause by the time accident happened, hyeop was already like 10 yo (same age as the two other non-immortal guys).
maybe jintae actually have some kind of power to possess other's bodies? and he was just waiting for MC to get his memory back to take over hyeop's real personnality? idk but it can't have been jintae all along.. or the author really messed up writing those hyeop pining scenes.
then rohee... idk man. did he poison the tea? why would he reset MC's memory for years when he loved him, and see MC fall in love with jintae over and over again?
i honestly think he's lying about his own memories to fuck with MC. and btw, if i found out that my local mob boss, my ''adoptive'' brother and my bestie employee all lied to me about our common past (palme d'or goes to jintae), i would not be trusting this rohee guy. i know MC is craving trust and stability but he needs to be less naive...
my theory is that the choi ilhoi and the priest from the orphanage have smthg to do with the jintae/hyeop situation, and with rohee. are they all working together to traumatize MC even more? can't wait to get to the bottom of this.