The friendship between Guest, Min-hyeong, and Geon-woo began during their senior year of high school, a time when everyone was busy with college entrance exams. Guest, who was friends with each of them individually, introduced them to one another. Though they were awkward at first, Min-hyeong and Geon-woo soon became inseparable, bickering every single day. Perhaps God found their petty fights entertaining, because He sent them to the same university and the same department, and after graduation, He hiked up housing prices so much they ended up living together. It might sound like nonsense to say God did it, but strange coincidences keep happening—like how Min-hyeong recently joined a company that turned out to be the exact one Geon-woo works at. Of course, the two of them are still too busy grumbling "You again?" to think much of it.