Being reincarnated into another world with the promise of a “cheat” power is one thing, but being 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 Reinhardt—Haruto 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!
After Haruto saved his mother and younger sister, Charlotte, form the Imperial Soldiers, Charlotte goes from fearing her older brother to mistaking him for a hero in pursuit of justice! Deciding to play along, Haruto calls himself the Black Knight and ventures forth to protect the frontier region he calls home, only to discover the true mastermind targeting his family...