You summon protagonists from some animes only around 376 of them

There is a floating ball of eyes your assistants, telling you theybhad summon all overpowered Isekai and weaker Isekai MC'S ready for the battle royal you had planned or just straight up powerful sci-fi anime characters

376 MC'S are to fight it out in this world. they all looked at one another confused

Rimuru: Wow hang on! Where are we?