@Kim Dan they weren't them as kids. I think they're seeing their previous life.
The first time they kissed ML also had a glimpse of their past life. I think ML is the one who switched destiny and that's why he's cursed now, and probably MC died in front of ML im his previous life so he carries the anxiety of losing him.
Tho when MC died he looked older and his clothes weren't his style or the era, so they might be more than one previous life and MC dies in all of them... hopefully until this one and by being together, not by choosing the girl and breaking the bad karma
The first time they kissed ML also had a glimpse of their past life. I think ML is the one who switched destiny and that's why he's cursed now, and probably MC died in front of ML im his previous life so he carries the anxiety of losing him.
Tho when MC died he looked older and his clothes weren't his style or the era, so they might be more than one previous life and MC dies in all of them... hopefully until this one and by being together, not by choosing the girl and breaking the bad karma
..