Saikyou no Ousama, Nidome no Jinsei wa Nani wo Suru?

King Grey possessed unmatched power, wealth, and status in his first life, yet lived without anyone he could truly trust or love. After a mysterious death, he opens his eyes again as an infant named Arthur Leywin on the magical continent of Dicathen, surrounded by a family that gives him a warmth he never knew as a king.

Grey's memories and experience remain inside Arthur, allowing him to learn magic at an extraordinary pace and build strength once more, but success is no longer the only thing that matters to him. When a family journey turns into a bandit attack, his new life is placed in danger and he discovers that power alone cannot protect everything he has become afraid to lose. For Arthur, a second life is not merely a chance to become stronger than before, but to learn how to live in a way his first life never allowed.