Multiverse: Starting with Joining a Chat Group, Probably

Glen, an ordinary pilot, transmigrates to a crossover world and joins a dimensional chat group. But... [Natsuki Subaru: I-I thought I'd transmigrated to another world. Where the hell did I end up?] [Kazuma Sato: Didn't I get hit by a car and die? How am I alive again?] [Iori Kitahara: Glen, why are you taking so long in the bathroom?] It's not just that they're all in the same world. Every group member is in the same class. Can this really count as a dimensional chat group? Still, no big deal. As long as I've got a cheat, I'm fine. What do you mean this world now has Gensokyo, Jujutsu Kaisen, Saya no Uta, urban legends, Shiki, Ao Oni, ghouls, and all kinds of monsters and demons just waiting to barge in? I'm supposed to fight all that? For real? What! The chat group gave me a Stand? Then my sword may yet prove sharp! What do you mean the cover features the Sushi Hero, not Koishi? Glen: "Ha!!"