Trying to identify a Korean drama tv series from about 2000 to 2005
The drama starts with a young man on a train whose boxer father had passed away. The young man was going to live/stay with an old friend of his father. This friend it seems, used to train boxing with the young man's father way back when. For simplicity, let's refer to him as the young man's "uncle".
The young man gets to his "uncle's" place and meets the daughter who I think was in school uniform heading to school. I think the uniform was white shirt, blue skirt...maybe.
I don't properly recall much else, but, the guy helped his "uncle's" daughter out of a school bullying situation I think or maybe he just caught her when she collapsed at some point. He later found out that she was leaving that place for somewhere else and he wasn't happy about it.
Also, one or both of them used to ride a bicycle to and from school.
Also not sure, but maybe years later they meet and one of them is a bodyguard.
I'm not sure of the release year, but I'm leaning towards 2001 or 2002. But again, I'm not certain, so maybe consider 2000 to 2005.