Doctor, Surgeon, Veterinarian, Detective, Firefighter with a Male Lead

Sudden Acquisition of Power
Ghost-Human Relationship
Seeing Things Other Humans Can't
Discrimination, Corruption, Jealousy
Revenge
Money Problems
Hospital, Medical, Doctor
Smart Male Lead
Strong Male Lead

Full Color Manhwa
Artificial Intelligence
Seeing Things Other Humans Can't
System
Hospital, Doctor
Smart Male Lead

Full Color Manhwa
European Ambiance
Nobility, Royalty
Abused Protagonist
Illegitimate Child
Tragic Past
Level System
Modern Knowledge
Medical, Doctor
Weak to Strong
Sword and Sorcery
Healing Power
Commoner to Noble
Smart Protagonist
Strong Male Lead

Full Color Manhwa
Veterinarian
Kind Male Lead
Special Ability, Animal Communication

Full Color Manhwa
Reincarnated in the Past
Time Travel
Doctor, Surgeon
Martial Arts
System
Smart Male Lead
Strong Male Lead

Full Color Manhwa
Reincarnated in Another World
Reincarnated as a Baby
Family Love
Medical, Doctor, Magic, Healing Power
Sword and Sorcery
Nobility, Royalty
Smart Male Lead
Strong Male Lead

Full Color Manhwa
Reincarnated in Another World
Reincarnated in a Book World
Reincarnated as a Side/Mob Character
Transmigration
European Ambiance
Nobility
Royalty, Prince
Limited Lifespan
Medical, Herbalist, Doctor
System Administrator
Sword and Sorcery
Loyal Subordinates
Hard-Working Male Lead

Full Color Manhwa
Reincarnated in Another World
Reincarnated in a Book World
Transmigration
Assassination Attempt
Medical, Doctor
Martial Arts, Cultivation
Clever Male Lead
Deceptive Male Lead
Master-Disciple Relationship

Full Color Manhwa
Reincarnated in the Past
Time Rewind
Second Chances
Revenge
Mother-Son Relationship
Strong Male Lead
Smart Male Lead
Martial Arts, Judo
Police, Detective

Full Color Manhwa
Reincarnated in the Past
Time Rewind
Second Chances
Level System, Skill Growth
Firefighter, Disaster
Selfless Protagonist
Teamwork
Strong Male Lead