冲原琴羽

澄之江学园2年级学生，庆司、真奈美(まなみ)的青梅竹马，在去年转学进入学园。 目前跟庆司同班，和风花是共同住在女生宿舍的室友。 能通过在水中呼吸、降低水压、保持体温之类的能力进行水中活动，这是被称之为“美人鱼”的能力。 庆司只知道之前的她比男孩子更顽皮，对于如今改变巨大的她难免纳闷，同时却也因她而心跳不已。

简介来自 Bangumi · 由机器翻译生成

Metis: <Mermaid> (Water) Childhood friend of Keiji and Manami. They meet again at Suminoe Gakuen after not contacting more than a year. She is very close to the siblings, that when Kotoha moved somewhere else without telling a word, she made Manami very upset. She and Keiji can banter with each other without feeling offended. Really care about her appearance. Despite the fact that she used to be a tomboy, she is very popular at Suminoe Gakuen and even won a school beauty pagent, gaining her the title "Miss Suminoe". She used to be a swimming club member, but when she awakened her Metis, she resigned.

简介来自 VNDB

澄之江学园2年级学生，慶司、まなみ的青梅竹马，在去年转学进入学园。 目前跟慶司同班，和風花是共同住在女生宿舍的室友。 能通过在水中呼吸、降低水压、保持体温之类的能力进行水中活动，这是被称之为“マーメイド（美人鱼）”的能力。 慶司只知道之前的她比男孩子更顽皮，对于如今改变巨大的她难免纳闷，同时却也因她而心跳不已。

简介来自 Bangumi