"Preparation To Defend The Academy"
High-level ability users already got the inside news and they were all busy preparing to survive while ordinary ability users and ordinary people were still in the dark, ignorant of the 'apocalypse'.
Actually, it was not as if the Abyss never broke out because, throughout the years, the seal would always loosen somehow.
There would always be some small breakouts but only one small gate far away from civilization broke out, which was why it never aroused the attention of people all over the world.
Even if it did, it only ended up as a rumor or vague news that many people didn't believe.
For many people in this world, an Abyss breakout means apocalypse, so the World Union always covered the news about some small Abyss breakouts.
If they could push back the demons silently, the World Union would never disclose the news and this was why, over the years, many transmigrators were hunted.