Have you seen my keys?

I lost my house key.

You must never show this secret key to anyone else.

He peered into the keyhole.

Let's exchange keys tomorrow.

He saw the character '憂', and remembered his deceased friend.

His face was filled with distress.

A drop of water fell from the cup.

The Tenpō calendar is one of the traditional calendars of Japan.

It is said that a wandering spirit appears in that old house.