Ogawa Hua, the kanban mother of the diving shop "Big Blue", is Kitahara's cousin. Gentle long-haired beauty, member of diving club. I love my sister, spoil my sister Qian Sha, and often steal Qian Sha's clothes to create a sense of satisfaction. Pay special attention to qiansha. Be treated as a sister by Zhiyi.
Kitahara Shiori, Kitahara's younger sister. Grade three, Aries, AB blood type. Because they yearn for a free life and don't want to inherit their parents' hotel, they design Zhiyi to inherit the family business, deliberately "pretend" to be an elder brother to strictly control Zhiyi, and even look at Zhiyi with a camera and a doll.