Charlotte Oba-san

Among the few family elders that Arthur genuinely holds in high regard, Aunt Charlotte and her husband Uncle Karl share a mutual love for cats. Gifted with remarkably sharp perception, she was one of the first to see through Mary's true identity as a human. Rather than exposing the secret, she chose to quietly watch over the two of them with warmth and care, hoping that Mary's presence would ease Arthur's aversion toward humans and bring healing to his long-closed heart.