She enjoys her sex life using a sex toy.

This toy is my child's favorite.

This plan has not yet reached the concrete stage.

If you use this jig, your work will become much easier.

He is making a futile effort like trying to scoop up the moon from the bottom of the sea.

In math class, we learned about the concept of union.

Kazumoto is my best friend.

Senwa is my best friend.

According to the traditional Japanese calendar, what is today's date?

Kazumiko is my best friend.