Reverse Transmigration: From F-rank to SSS-rank

Ardyn, the Crimson Monarch was a Demon King feared for centuries. Until he was betrayed by his most trusted general and sealed away by the combined might of the demon and immortal realms. But the world has other plans, because instead of remaining sealed, he wakes up in a modern world where magic still exists… but here, unlike his world, power isn’t stolen, it is earned. People compete for power and recognition, and only the strongest rule, while the weak always end up as pawns. He found himself in the body of a weak bullied teenager who ended his own life. But the one problem now was that his demonic powers were still sealed away. Now, he had to start all over again, kill whoever and whatever got in his way, just to get the one thing that mattered most to him.... power! Because no matter the world, one truth never changes, only power matters, and only the strong succeed. Author's note: I'm a new author so please don't expect a perfect story. some of you might be displeased with how I executed the MC'S abilities, but I assure you the plot is worth a try. It's fine if some of you drop the novel for those reasons, I just hope you can support my work while you read. If you're looking for a perfectly written novel, then this isn't for you.