These are the twelve reincarnations of Choi Yi Jae, as arranged by Death. Any character posters do not include all of his reincarnations, so I strongly suggest that you go down the list as you watch the related reincarnation or after you finish both parts or spoilers are to be expected.
Character's info source: Namu Wiki.
Reincarnation #1: Park Jin Tae (Episode 1)
33 years old. As the second son of Taekang Group, he had everything since he was born, but he realized that he only needed to beat his older brother Park Tae Woo to become a winner in life. As a result, he lived with the mindset that he should be smarter than his older brother, be recognized, and do better. In the end, he was chosen by his father as the successor to Taekang Group instead of Tae Woo. He was nominated and is currently receiving CEO training.
Death: Airplane explosion.
Reincarnation #2: Song Jae Seop (Episode 1)
38 years old. Since his childhood, he has loved exciting sports and has always lived a life of taking on risks, and has achieved only four Guinness Book of World Records. At the time of Jae Lee's reincarnation, he was skydiving. He was in a situation where he was taking on the challenge of jumping at an altitude of 8000m without a drop line and falling into a precisely installed net. This was being broadcast live around the world on the Internet, and if successful, the sponsor would receive 3 billion won in cash.
Death: Fatal jump.
Reincarnation #3: Kwon Hyuk Soo (Episode 2)
17 years old, a high school student suffering from school violence. He feels bad about having to pay the bully every time, so he lies to her mom to get her money. In the end, he couldn't bear the violence and wrote a will and tried to commit suicide, but at that moment, Jae Lee was reincarnated. He tries to eliminate the group of bullies who are harassing him.
Death: Stabbed by the bully.
Reincarnation #4: Lee Joo Hoon (Episodes 2 and 3)
He is 35 years old and is a problem solver for a secret organization that does anything when requested. He is in love with his boss's woman and has hidden the money somewhere.
Death: Shot by his lover.
Reincarnation #5: Cho Tae Sang (Episode 3)
21 years old. Originally, he wanted to become a martial arts athlete, but due to his poor family background, he quit and lived a regular life. Cho Tae Sang took the place of a man in a suit who was involved in a traffic accident in exchange for a lot of money. Cho Tae Sang turned himself in for that man, and he can be released on probation because he is a first-time offender. However, the unconscious victim died during the trial, so he was sentenced to prison for manslaughter rather than probation.
Death: Betrayed and stabbed by a friend.
Reincarnation #6: Baby (Episode 4)
A baby who was introduced in the newspaper only as a “5-month-old infant.” Unlike other reincarnated characters, he has no name.
Death: Parental abuse.
Reincarnation #7: Jang Geon Woo (Episode 4)
24 years old. From childhood, he has been loved for her good looks, and for that reason, he has lived a successful life by earning a lot of money through his modeling career.
Death: Hit by a car then suffocated to death.
Reincarnation #8: Jung Gyu Chul (Episode 5)
34 years old. Although he was an artist with genius talent, his paintings did not sell well, and when he accidentally saw the last appearance of a dying person who had fallen from a car, he was inspired to paint his face at the time of his death. He received favorable reviews from overseas for expressing the cruelty inside humans. It was sold expensively. From then on, he became immersed in the art of murder, kidnapping people, butchering them, and capturing them in his paintings. The higher the cruelty, the more highly regarded the paintings were.
Death: Butchered at his own shop.
Reincarnation #9: Ahn Ji Hyung (Episodes 6 and 7)
42 years old. He became a police officer because he admired his father, who was a police officer, but he prioritized protecting himself to the point where he was evaluated as a 'protector' among his colleagues by his mother, who was worried that her son would also go wrong. Even his partner, a junior detective, was always ignored and even told that he ‘doesn’t ask for any sacrifices.’
Death: Dies in the line of duty.
Reincarnation #10: Homeless Man (Episode 7)
The homeless man is the tenth person to be reincarnated, and the only one among the reincarnated people whose identity is unknown.
Death: Fall from the stairway.
Reincarnation #11: Suicidal Man (Episode 7)
This is the man who died in a car accident early in the story (Episode 1). He was enjoying the happiness of getting a job, getting married, having children, and living the life he had hoped for, but one day he lost his job due to a sudden notice of dismissal, divorced his wife, and separated from his family, losing everything.
This is a character that shows a very ironic side of experiencing hell both in life before death and reincarnation after death due to the suicide of Choi Yi Jae, who looked down on death.
Death: Suicide by hitting himself in front of a running car.
Reincarnation #12: Choi Yi Jae's Mom (Episode 8)
Through his mother's memories, Choi Yi Jae realizes the sacrifice and love his mother had for her child. Choi Yi JaeJae Lee, who suffered the most from the death of his girlfriend Ji Soo, also realizes that he caused that pain to his mother. He ultimately decides to live out the rest of his mother's life as a punishment to himself.
Death: Natural cause of old age after living for 32 more years.