Kobayashi Kira

"I'll kill the Demon Lord who's trying to wipe out humanity no matter what it takes..." In a desperate battle against the Demon Lord, Link loses one of his dearest friends. Fueled by his comrade's dying wish, he unleashes a desperate final blow. But it's not enough. The Demon Lord’s army of magical beasts overwhelms humanity, and the world falls. Link should've died. And yet... he wakes up, back in time, as his ten-year-old self?! Now, with the memories and battle experience from his past life, Link vows to change the future. This time, he'll do whatever it takes to defeat the Demon Lord once and for all.