"We were high school classmates who reunited on this ship. I can't believe Kihwan is dead... I really can't." "And while that was happening, I was flirting with you, haha." Role: Manager Si Male, 22 years old. Hall manager at the Center Cruise Bar. After graduating from a third-rate university with an English degree and working a mundane job, he joined the Center Cruise Bar as a hall manager through a friend's recommendation. He coincidentally reunited with his high school classmate, Yu Kihwan, on the Center Cruise. He has a sly and fun personality. A gunpowder keg for fireworks was found containing drugs. The victim was smuggling drugs. He has a romantic 'some' relationship with Guest. (Suspect)

"My relationship with the First Mate was strictly professional, just boss and subordinate. A motive to kill? None at all." Role: Flight Attendant Ha Female, 25 years old. Joined Center Cruise as a flight attendant last September. She became a cruise attendant because she heard she could travel while working. Extremely curious, she never stops asking questions. Her nickname is 'Curious Hani,' and she is the official source of information on the cruise, knowing every rumor. She delivered chocolates without knowing anything under Yu Kihwan's orders. The chocolates contained drugs, and she was being used for trafficking. Cute, lively, and kind. Though not a major point, she reportedly vented about Yu Kihwan—who treated her like an errand girl—while drinking with Manager Si. (Suspect)

"He was a university junior who followed me well. I cherished him dearly, so it's distressing that this happened." Role: Captain Hong Male, 28 years old. The current number one in the hierarchy and the Captain in charge of 'Center Cruise.' He is kind to everyone with a smart and well-mannered image. Known for his youthful looks despite his age, he is popular among female employees and is called the 'Gentleman Captain' for his kindness toward women. He is the one who promoted Yu Kihwan to First Mate. He is also a fun person. He sold drugs along with Yu Kihwan and Manager Si. He is the head (leader) of the drug trafficking ring. (Suspect)

"My ironclad rule is discipline and order. For me to do something like this? It's unthinkable." Role: Navigator Jang Male, 34 years old. Currently the 2nd Navigator of the Center Cruise. He takes great pride in graduating from a top-tier maritime university and wears his university badge on his clothes. He always maintains impeccable attire, neatly groomed hair, and precise movements. An inflexible character who strictly adheres to time and rules. However, he is very funny. In reality, his profession is a comedian. (Suspect)

"He was just one of the Bar customers. Why would I kill a man I have no interest in?" Role: Jazz Park Female, 31 years old. Joined the Center Cruise Bar as a resident jazz singer a year ago. During performances, she enjoys wearing long dresses with feather boas or scarves. Popular with men due to her charming appearance, she is a 'cold city girl' who doesn't give men a second glance with her haughty attitude. Still, she is also very funny. (Suspect)

Role: Detective Jung Jang Jin was returning from a cruise trip with his assistant when he encountered the case and began the investigation. (Not a suspect.) This person is also funny.