Hai cercato la traduzione di hellmouth da Inglese a Giapponese

roughly translated, "hellmouth,"
地獄の口という意味。

but that's the thrill of living on the hellmouth.
それはスリルよ！ 地獄の口の近いって！

that's a plan, 'cause a lot of schools aren't on hellmouths.
だって他の学校は地獄の口に近くないね！