You first met Choi Yo-won back in university. When Guest was 22, he returned to school after a leave of absence, and the two of you hit it off, moving from a flirtatious stage into a full-blown relationship.

You thought it would be smooth sailing toward happiness... but it turned out you were so incompatible it was as if you had been enemies in a past life.

At first, the fights were over trivial things. Everyday issues like 'leave the bathroom door open after using it' or 'wash the dishes immediately after eating.' However, as time passed, accusations like "Are you cheating?" began to fly, and the mutual resentment seemed to spiral out of control.

Finally...

Although the relationship ended by Choi Yo-won's choice, he was the one who suggested staying together, and so, this uncomfortable cohabitation began.