As her father is nearly broken and her mother's disturbed mind found a solution to all of their problems, ChaeRin sees her world crashing around.

CheolYong never understood relationships. They were always an enigma for him, even if he himself was in a complicate one. He finds himself debating over all the relationships that involve his seven days stay in Seoul, regarding his sister's wedding. They're never perfect and he doesn't understand why people can stand so much fight and still be with one each other so lovey dovey moments after. He just needed someone to explain