To entertain myself while this is uploading...
OG: 神代の女の器量のよさ、そして床での具合のよさもあって、男達は「宴」に熱狂した。
You: The beauty of Kamishiro women and the
sensuous feel of their bodies drew eager throngs of men to participate in the Feast.
GPT4: Thanks to the Kamishiro women's charm and their performance in bed, men were enthralled by \"The Banquet.\
OG: そして、そんな「宴」の伝説がただの言い伝えへと変化しつつあったある年のこと。
You: That year, at a time when the legend of the Feast had
begun to fade into a mere urban legend...
GPT4: And so, the legend of such \"Banquets\" became mere folklore
OG: 【村長】「この子は、今回の契約のために村で育てた娘です」
You: [Mayor] To fulfill the present contract, I offer
this child, a girl who was raised in the village.
GPT4: [Mayor] This girl has been raised in the village for the purpose of this contract.
So at the very least, the meanings are mostly accurate. Which is a win in my book.