Responses
My original theory was that it was either the father, a twin, or karsus was some sort of unaging "monster" which was why he has so many secrets to hide.
Once he had to cut his hair i started to get reallll suspic. And then once they time traveled i was screaming
I thought I was talking nonsense when I was thinking what if it was karsus was mr. Inspector/swordsman. What if he time travelled then that would make a lot of sense then when I was reading the chapter that when they time travelled I thought what if karsus's father with his lover was actually karsus and sica together. Then turns out my theory was actually right