[Crossover] Keter-Level World Crisis

Honestly, I've lost count of how many times I've watched the world end. So which immortal let all those Keter-class guys escape? Whatever. That's not important right now. I only have one thing to do: contain, contain, and contain. All those scattered anomalies, get your asses back to the Foundation! As for the rest, the O5 Council can worry about them themselves! [From Dr. Zeng's report] Notes: 1. This is a silly story written with elementary-school-level prose by a sensitive author. I'll fix the OOC, and I'll listen to corrections. No insults, please. Feel free to click away or go back. I'm a high school student trying to fill in the plot, but I may not update daily. [Begin recitation] 2. I'm writing this for my own amusement and to recommend an obscure fandom. Thanks for your support. 3. This is the fourth male lead. His seniors are next door, and his buddy's story is [Crossover] A Safe-Class World Tour. I might start that one first. There's also a story called [Crossover] Euclid-Class World Invasion. The title tells you what kind of story it is. 5. I'll add more when I feel like starting another story. Theme: We must save the world.