After the Trash Touched the Coffin, the Demon Lord Urged Me to Stay Calm

At seventeen, a discarded nobody stumbles upon an ancient coffin—and the treasure inside changes everything. But the gift comes with a price: the coffin's resident, a languid Demon Lord with a dangerous smile, offers him power beyond imagination. "I'll give you a stairway to the heavens. What will you trade?" The boy's answer is swift: "Anything but my heart." The Demon Lord's laughter echoes through eternity. "Then I'll claim your clarity instead." Now armed with unimaginable strength and a voice in his head urging restraint at every turn, he begins his bloody ascent. Only when he stands at t…