Kaifuku Jutsushi no Yarinaoshi: Sokushi Mahou to Skill Copy no Choetsu Heal
Keyarga is a healer who is used and tossed around by his fellow adventurers on the assumption that healers cannot fight on their own. However, when he achieves the ultimate healing magic, and heals the world itself, he goes back four years to redo his life. (Source: ANN)
