Mofumofu to Isekai Bouken Meshi

Company employee Sano Jyu, who had a frail constitution, always had a sensation of heat inside his body. Then, he collapses due to the combination of a busy season and an outburst of fever. Then the goddess appears and tells him. You have made a mistake in the world in which you should be born. The cause of the fever is magical power, and he was born with magical power in a world without magical power. Itsuki is reborn in another world with a healthy body and more magical power than any other person, just as he wished, thanks to the power of the goddess. And with the legendary magical beast born from the egg he was given as his partner, he begins his second life as an adventurer...