Kamigami ni Sodaterareshi Mono, Saikyou to Naru

A baby named Will is found floating in a boat along a river and is rescued by Reus, an all-powerful deity, who brings him to a divine mountain. There, three gods—Ronin, the Sword God; Miria, the Goddess of Health; and Vandal, the Magic God—observe his abilities and each proposes a path for his future: a warrior, a healer, or a magician. Disagreement among them leads Reus to intervene, instructing them to take turns training Will. Through lessons from each deity, Will gains skills in swordsmanship, healing, and magic. By age 14, he has become exceptionally powerful and begins his journey.