His pranks are causing trouble to his classmates.

He finally confessed to the police.

Wataru is good at crossing rivers.

Please be careful of his wiles.

His behavior always stood out in a bad way, and there were voices of criticism from those around him.

He used his malicious knowledge to cheat on the test.

LOL, that joke is really funny.

To be frank, I think we should have a heart-to-heart discussion about this issue.

Where is Mr. Nawarinui?

He got sick from drinking alcohol last night.