Guy is an introverted guy who, ever since high school, has secretly been in love with his best and only friend, Wal. To ease the loneliness of this one-sided love, Guy plays an online role-playing game every night, where he interacts with various players, including Yuri. When they finally meet in person, Guy discovers that Yuri isn’t just a guy—he’s also a gangster! Will this dangerous gangster become the Oppa of his heart?