Ai-chan's bodyguard and driver. He always wears a black business suit and sunglasses, akin to Secret service agents. He is very obedient to Ai-chan's orders because she blackmails him with disclosing the misdeeds he has done when he thought no one was watching (such as accidentally breaking one of her parent's priceless pieces of art and using super-glue to repair it) such as one time when Ai-chan ordered him to find leaves that have fallen during autumn (which result in him being hospitalized when he slipped while catching a beautiful leaf hanging on top of a tree branch). He has dated Miss Ageo, a Futaba kindergarten teacher. He hides while Ai-chan is in class (for example, in the top of the playfield's trees), but Shin-chan always finds his hiding place.
He is known as Mr. K in the Funimation dub.
