Castaway on the Moon

It's about a man named Kim, who decided to end his life by jumping off the Han River. Guess his bad luck was just too much that his suicide attempt (and attempts) failed. He woke up to find himself stranded on an island in the middle of Han River and decides to be a castaway ala Tom Hanks. He later found out that he's being watched by a lady who had locked herself to her room for years and had a hobby to taking pictures of the moon (because it was alone?). Tralala. And they fell in love... wonder how they'd pay off his debts? Doubt if it would be and they lived happily ever after. Hehe.