He was observing the outside through the peephole in the door.

He was so ashamed of his failure that he wished he could crawl into a hole.

It seems that the mortise of this old furniture is loose.

As a carpenter, he has mastered the technique of making mortises.

I found a common rabbit in the park.

He inserted his finger into the anus.

Everyone, please have a good new year.

They appear to be antagonistic on the surface, but in reality, they are seemingly not part of the same group.

Excuse me, may I come in?

When he had a problem due to his own actions, he remembered the phrase 'chickens come home to roost'.