Reading the Fudoki, you can understand the life of ancient Japan well.

He was organizing documents using a shakudan.

He was locked up in a cell.

He succeeded in deciphering the ancient documents.

It took him a week to decipher the ancient document.

The readability of this code is very high.

We gather every week for a study meeting.

We meet and study classical literature every week.

He is feeling lonely.

He learned Japanese through self-study.