The original light novel series of the popular isekai manga!
To be reincarnated into another world with the promise of a cheat power is one thing... but to be reborn as a baby, and then left for dead after your royal parents think you're powerless That's another thing entirely! Now the newly-born Reinhart--or Hart to his new friends--must find his way through a dangerous world...but luckily he's got magic that's quite literally off the charts!