Akio lost his parents young, and he never stopped wishing he could have a family again. When he dies in a reckless act of heroism, that wish is granted—he’s reborn as Reno Frostworth, the cherished son of a loving couple in a world of mages and monsters.

For the first time in years, he gets to be what he always wanted: a child. But childhood doesn’t last forever. Magic beasts stalk the wilds, kingdoms clash, and ancient traditions crush the weak. If Reno wants to hold onto this happiness, he’ll have to grow quickly. He has no system or cheat. Just the instincts of a biologist, in a world where only the fittest survive.

But maybe—just maybe—that will be enough.