Cerberus (Amuse Creative Studio)

Living with his mother Yukie (53) in Shin-Ōkubo, Tokyo, Kai Fukutome (21) is walking his childhood friend Rika (21) home after celebrating Yukie’s birthday when they are suddenly assaulted by a stranger. Though Kai and Rika narrowly escape, the danger is far from over. Just days later, Kai’s closest friend, Park Yujun (21)—a Korean resident in Japan—is murdered by the same man. The nightmare deepens: Yukie and Rika are dragged into the incident as well, leaving Rika in a coma and Yukie dead. In the wake of this devastation, startling revelations surface. Yujun had secretly worked as a spy for “Nation N.” Kai also learns he has an estranged twin brother, Im Jin—a superstar in the wildly popular K-pop group Littlegang—and that his long-absent father, Im Dohyun (53), is alive and living in Korea. Overnight, Kai’s destiny shifts. Determined to avenge his loved ones and uncover the truth of his own origins, he sets out alone for Seoul. But what awaits him there…!?

Original Webtoon