Netherworld Blood Sea! The Fused and Improved Version of the Philosopher's Stone Transmutation Circle Appeared

The simpler the plan, the higher its chance of success.

Conversely, the more complex and elaborate the plan, the lower its chance of success.

Because the simpler a plan was, the greater its margin for error. Even if something went wrong, it could be remedied or replaced with another approach. Mephisto's original plan had been extremely simple and straightforward: as long as Blackheart took the bait and stole the "San Venganza Contract," it would succeed.

But no one had expected someone to interfere, and at such a precisely chosen moment. They had directly strangled Mephisto's most likely plan in the cradle. Fortunately, simple plans could be altered with other methods. Yet with some mysterious powerhouse deliberately meddling and sabotaging things, Mephisto knew the situation could no longer develop according to his wishes. As a result, he revised the plan step by step, eventually creating a grand scheme so vast that even Mephisto himself felt his scalp tingle.

Ordinarily, such a grand, complex, and intricate plan would indeed attract the interest of onlookers. But therein lay the problem. If it had merely interested some random bystanders watching the drama unfold, then it would have remained just that—interest. They lacked both the ability and inclination to interfere. But this was a world where gods and demons existed. Though Mephisto and Mount Celestia were both major forces of considerable scale, that did not mean they could intimidate every other faction. Therefore, once another powerhouse or force interfered, even if the plan did not collapse, Mephisto would lose control of it.

Just like now, even Mephisto had not expected Archangel Uriel to suddenly come up with such a ridiculous maneuver as creating an isolated Subspace. It had nearly driven the Demon Lord into a rage on the spot. After great difficulty, he revised the