Why did the MC hair colour change tho? From black to almost blonde?

Maybe it faded back to his original hair color since he was blonde when he was young but yeah kinda weird how it just changed and no one pointed it out haha

you may have forgotten but he (the real guy before they swapped bodies) used to dye his hair black and it just faded out because MC wasn´t redyeing it

Na i know the OG owner used to dye it various shades, and MC changed it to black when he swapped so i assumed it was the OG hair colour. Thus i wondered cause i was confused

Why is it weird tho? I mean the original hair colour is blonde in first place. When the mc reborn in that body, he dyed his hair black. He mentioned that he dyed it too since at first the hair was red (I think) and it's too eye catchy. Mc probably didn't even know the body og hair colour was blonde. Ofc the black dye will slowly gone though cuz mc didn't regularly dye his hair

For me personally, I think of it as some representation of accepting oneself, allowing Doyoon Kim him to finally show the true hair colour of Doyoon Ye which is blonde and take revenge upon those who ever abused him in the past. An eye for an eye, tooth for a tooth y'know.