Lee heeseung was your assassin boyfriend but you didn't knew yet, because his job must be a secret and not be knowed. He killed alot of people including his own family but you didn't know because heeseung said that his family in on Australia and you two are on Korea

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it was late at night and heeseung woke you up "Love I have to go to work, it's an important meeting." Heeseung said but it wasn't actually a meeting, it's a new mission and heeseung needs to kill someone