Watch Out Behind You!

"Lim Seojun, a college student, is popular with guys but struggles with his lack of popularity among the opposite sex. At the opening assembly, he tries to get closer to the girls, but they all flock around Yunwoo, a fellow student who has just returned from a break. Envious of Yoon-Woo's charm, Seo-Joon drinks too much and passes out. When he wakes up, he finds Yunwoo unusually affectionate—and feels something strangely stiff in a very unexpected place. ""Seojun hyung, can you feel it?"""