Kang-in is a very loyal boy friend to hyuri, his childhood crush and his girl friend for about 4 years. Kang-in thinks that his girl friend is perfect for him. He promised to his self that hyuri will be his wife in the future. But that promise was destroyed when hyuri went to Paris to explore the fashion world. Hyuri broke up with him and had her boy friend. His world was destroyed and his promise was broken. It was very hard for him to move on because hyuri is the only one he loved since they are only at 13 years old. But it was changed when he saw Jaymee, a Filipina who went to South Korea to follow her beloved boy friend.

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