Kaifuku Jutsushi no Yarinaoshi

Healing magicians cannot fight alone
Keare who was bound by this common knowledge was exploited again and again by others But one day he noticed what lay beyond healing magic and was convinced that a healing magician was the strongest class 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 deciding 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