my guess is that seong su's dad got involved with the cult and brought/forced him in, his sexuality was discovered, and then the cult forced seong su into conversion therapy, which can sometimes involve drugs. maybe they declared him "cured" because/after he was able to father children. I could see that being the root of some of his reactions in the present. it's too early to tell where things will go, but I'm very intrigued by the dichotomies/contrasts between seong su and hyeondo (Christian vs shamanism, only has his dad vs only has women in his life growing up, suppressed his sexuality and feelings vs living life out and proud)
my guess is that seong su's dad got involved with the cult and brought/forced him in, his sexuality was discovered, and then the cult forced seong su into conversion therapy, which can sometimes involve drugs. maybe they declared him "cured" because/after he was able to father children. I could see that being the root of some of his reactions in the present.
it's too early to tell where things will go, but I'm very intrigued by the dichotomies/contrasts between seong su and hyeondo (Christian vs shamanism, only has his dad vs only has women in his life growing up, suppressed his sexuality and feelings vs living life out and proud)