There's an anecdote about him to the effect that when he was in the Court and tried to send for his follower who was outside the Court, nobody could recognize him, so Kawanari took the follower's likeness, which made it possible to bring him in quickly.
かつて宮中で外にいる自分の従者を呼んでもらおうとしたところ、誰もその従者の顔を知るものがなく、河成は似顔絵を描きそれによって速やかに連れてこさせることができたという逸話がある。