Hidden Vice

Beta Min Jaehee, who made a living as a pickpocket scraping by in back alleys, is a terminal cancer patient with limited time left to live. With no particular will to live, he tries to prevent the suicide of Cha Sukyung, with whom he maintained a vague acquaintance, but ends up falling with him from a pedestrian overpass.

When he wakes up in the hospital, he finds himself as Cha Sukyung, and to his shock and dismay, his precious male part is gone. Now he must live as an Omega who doesn't even know what pheromones are or have basic common sense about being an Omega.

"Ugh, being an Omega really is the worst. There are so many things missing and so much to learn. How do I even manage these pheromones? Am I supposed to carry them around in my pocket?"