–Using healing magic on the world itself, I'll start over. 'Healing magicians cannot fight alone.' Keare who is bound by this common sense was exploited again and again by others. But one day, he noticed what lied ahead of healing magic, and was convinced that a healing magician was the strongest occupation. However, by the time he realized that potential, he was deprived of everything. Thus, he used healing magic on the world itself to go back four years, and decided to redo everything. This is a heroic tale of one healing magician who became the strongest by using knowledge from his past life and healing magic.