Nevertheless 🦋 the show of hidden symbols..
You can watch this series and be very amused by the characters, twists, drama and intimate scenes, but you can also deepen your vision to understand the symbols hidden in this lovely show.
I think the clue is in the episode when Park jae-un felt disappointed and sent to the bar where his first interaction with Na pi occured, and a strange female asked him about his tattoo and she said that it is known if you touch the wings of a butterfly and then rub your eyes you would be blind, Park jae-un defended in stand for the butterflies and said you wouldn't be blind it is only an allergic reaction that may or may not occur, but you never ask about what happened to the butterfly itself and the permanent fatal damage of its wings......... I think this is the secret behind the butterfly tattoo
.... Park jae-un is traumatized since childhood and he is handsome and pretty similar to a butterfly, but when you get closer to him you would be blind or at least allergic, and he is damaged much more with a broken wings....
A second symbol was his home that is dark with black-painted walls, but has a room looks like heaven.. colorful floral and full of pretty butterflies ....his home represents his personality, the visible part is black but the hidden part is pretty and locked, and when Yoon seol his ex girlfriend asked him to liberate the 🦋🦋 he could not confess his real feelings or liberate the 🦋.