The customs of this region are very interesting from a historical perspective.

There are several words used as 働詞 in this ancient document.

We started a collaboration for a new project.

We decided to collaborate on a new project.

He learned about the concept of synergism in theology class.

The baby's eyes are big and cute, aren't they?

He is not the least bit concerned about criticism.

Fuwa is my best friend.

Learning the teachings of Kōotsu Kyō is very important to me.

The government tried to suppress the information.