The reason why the character Prince Ian was more heartbreaking

Seeing why actor Byun Woo-seok chose the scene where he cries alone in episode 10 as his most memorable moment, I think I understand even better why so many people were so immersed in the character of Grand Prince Yi An. The way he couldn't lean on anyone even in difficult moments and quietly swallowed his emotions felt so much like Grand Prince Yi An that it resonated with me even more deeply. I think Byun Woo-seok expressed those emotions so delicately that viewers were able to feel the pain and empathize with him, which is why he has become a character that remains in our memories for so long.