I forgot this one reincarnation manhwa. Injust remember he was a doctor that died and got reincarnated with a system. He started on a small doctors association but everyone treated him badly. Everyone uses heal but he uses "Ancient method" which uses medicinal tool. He's got 2 apprentices a girl and a boy. He was an illegitimate son, he was hated by the sister who is a princess. He's building his own hospital in the slums and was getting the recognition of the poor people.
I forgot this one reincarnation manhwa. Injust remember he was a doctor that died and got reincarnated with a system. He started on a small doctors association but everyone treated him badly. Everyone uses heal but he uses "Ancient method" which uses medicinal tool. He's got 2 apprentices a girl and a boy. He was an illegitimate son, he was hated by the sister who is a princess. He's building his own hospital in the slums and was getting the recognition of the poor people.