YOU SAID:
Once upon a time, a few mistakes ago I fell asleep inside my sleeping bag.
INTO JAPANESE
昔々、私は自分の寝袋の中で眠りに落ちました。
BACK INTO ENGLISH
Once upon a time, I fell asleep in my sleeping bag.
INTO JAPANESE
むかしむかし、私は寝袋で眠りに落ちました。
BACK INTO ENGLISH
Once upon a time I fell asleep in my sleeping bag.
INTO JAPANESE
むかしむかし私は私の寝袋で眠りに落ちました。
BACK INTO ENGLISH
Once upon a time I fell asleep in my sleeping bag.
That didn't even make that much sense in English.