Ink Sans stood beside Player, silently watching Toby clash with the Error-Checking System.
Ink Sans could not help wondering. "By the way, why did Toby want you to throw Linde into the Main Universe back then?"
Player seemed to have expected Ink Sans to ask this. "As the creator god's incarnation, Toby possesses absolute power that cannot be surpassed. However, because of the restriction that 'the world is a game,' he cannot use his power at any time outside the period Frisk spends in the Underground.
"Because only the time Frisk spends in the Underground counts as part of the 'game.'
"So, to change all of this completely, he needed an outsider to split the universe into new possibilities and change its fundamental nature as a game, allowing his self in one of those universes to escape that restriction.
"The instant Linde entered this universe, its past, present, and future all changed.
"This universe's Error-Checking System, the force that maintains its existence as a game, noticed the anomaly.
"The two humans who fell into the Underground affected the Error-Checking System's judgment, causing it to miss the opportunity to connect the 'gamer' behind the screen to Frisk.
"As a result, this universe changed. It was no longer a 'game.'
"Once the universe escaped the restrictions of the 'game,' the Error-Checking System lost its reason to exist, and its power would disappear as well."
Ink Sans spotted a problem. "But... look at the fight right now. It obviously hasn't lost its power, has it?"
Player nodded in satisfaction. It seemed that old bastard Ink really had been listening to him. "Yes, and that's because of Ye Yu. The Error-Checking System invaded the world where the 'gamer' lived, causing the entire universe itself to make an error in judgment.
"It made the universe's