 If you liked
Mayoiga
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 ...then you might like
Ame wo Tsugeru Hyouryuu Danchi
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These two features a large cast of young characters deciding to explore a mysterious and abandoned location, intentionally/ unintentionally. and ended up getting trapped there due to some sort of disasters
The characters both have a similar attitude, stupid, dumb, and love to start arguments with each other, with one being similarly designed and even one being from said mysterious place, where they share about their internal struggles that brought them here. They also play into a bit of horror elements too