Manjirou is a yōkai who briefly appears in the series.
Manjirou resembles an eel with a considerably cute face having black dots as eyes and a mouth that looks like a wider caret symbol.
He is shown to expect punctuality from his acquaintances. At times, he's seen with an impatient attitude but he is a yōkai with determination. He doesn't like it when a person bows down at him for petty reasons.
Manjirou requests Haruitsuki to help him search for a wedding ring that was lost when his wife went for a walk. Even after failing to find it four times, Manjirou wasn't willing to give up. He gets very happy when Hanae found the ring in the fifth meeting and becomes eager to deliver it to his wife.
Manjirou is delighted to see that his wife accepts the ring. Satisfied with his completed work, he gets exorcised by Haruitsuki.