Kaifuku Jutsushi no Yarinaoshi

Kaifuku Jutsushi no Yarinaoshi synopsis: "Healing magicians cannot fight alone." These were the shackles that bound Keare, subjecting him to endless exploitation at the hands of others. But one fateful day, he unearthed the hidden depths of healing magic and became convinced that healing magicians possessed unparalleled strength. Regrettably, it was only after losing everything that he fully comprehended his potential. Determined to rewrite his past, he harnessed the power of healing magic to journey back in time four years. Thus began the heroic saga of a healing magician who, armed with knowledge from his previous life and the magic of healing, aspired to become the mightiest force in the world. (Source: Mangamonster.net)