Ko SeYeon is his first love. Screenwriters. Edit Information. Cha Min. Both of them will try to chase the mysterious case behind everything. Yoo Je Won. Park Bo Young. Ahn Hyo Seop. … Support Role. Directors. Main Role. Both of them will try to chase the mysterious case behind everything. Main Role. After accessing the "Abyss", he reincarnates into a super handsome guy. Main Role. Primary Details Cover Image Related Titles Cast Crew Genres Tags Release Information Production Information. Ko SeYeon is his first love. Go Se Yun | Lee Mi Do. The "Abyss" is a celestial object which has the power to revive anything that has died; the reincarnated bodies take on the appearance of that person's soul. They start working together to find out the reason for their revival and who caused Go Se-yeon's death. Moon Soo Yeon. Abyss (2019) Details; Episode Guide; Cast; Reviews; Recommendations; Photos; Edit this Page. Go Se-yeon takes on a plainer appearance, whilst Cha Min becomes very attractive and young; virtually the opposite of before. Report.