皆神沙久耶

孝介血缘相系的实妹。 黑瞳孔、黑头发的美少女，可惜待人毫不亲切，经常一副不耐烦的表情。 孝介口中的「能干的妹妹」，对于爱管闲事的他，皆神沙久耶(さくや)简直就是监督员一般的存在。 虽然认为自己是个没趣的人，但只有在和哥哥的来往中，才会展现她天然呆和吐槽的双重属性。 因为血压低，总显得比较瘦弱。 现在离开家住进女子宿舍，也因此和孝介的来往基本上只剩邮件而已。

简介来自 Bangumi · 由机器翻译生成

Hobbies: Exchanging mail with her brother Likes: Sleeping, sweets Hates: Imposing image Kousuke's blood-related younger sister. A black-haired beauty. People think she has an uptight personality since she always shows a stern expression. But according to Kousuke, she is just very awkward and actually a good-natured person who always pokes her nose into his matters and helps him. She thinks of herself as not very interesting, but that changes whenever she has a conversation with her brother. She mainly communicate with Kousuke through mail ever since she started to live in a school dorm. Like Kousuke, she doesn't remember much of her childhood. [Based on the official website]

简介来自 VNDB

孝介血缘相系的实妹。 黑瞳孔、黑头发的美少女，可惜待人毫不亲切，经常一副不耐烦的表情。 孝介口中的「能干的妹妹」，对于爱管闲事的他，さくや简直就是监督员一般的存在。 虽然认为自己是个没趣的人，但只有在和哥哥的来往中，才会展现她天然呆和吐槽的双重属性。 因为血压低，总显得比较瘦弱。 现在离开家住进女子宿舍，也因此和孝介的来往基本上只剩邮件而已。

简介来自 Bangumi