Did they stumble upon No Man's Wharf or something? Let me guess, after passing the Tori Gate, they will be in the Lost Bastille fighting Ruin Sentinel?
Oh! It kinda reminds me of Death March, there are also Torii Gates there, and apparently it has some hidden af plot that only manga/novel readers shall know
@StarGasm The Torii are sort of super common in isekai I suppose, to show some sort of connection between the other world and Japan beyond "Hey I just got isekai'd from Japan." They make a lot of appearances in Japanese fantasy in general too, gotta use those cultural references I guess?